Article
Materials Science, Ceramics
Housei Akazawa
Summary: This report introduces a method to evaluate the crystallographic orientation and crystallinity of HAp thin films using Raman scattering spectroscopy. By analyzing the Raman spectra, the presence or absence of certain signals can indicate the orientation of HAp crystals. Another approach involves evaluating crystallinity based on the line width of specific Raman signals.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Young-Hoon Kim, Sang-Hyeok Yang, Myoungho Jeong, Min-Hyoung Jung, Daehee Yang, Hyangsook Lee, Taehwan Moon, Jinseong Heo, Hu Young Jeong, Eunha Lee, Young-Min Kim
Summary: Efficient and automated methodology is developed for large-scale mapping of crystal symmetries in polycrystalline Hf0.5Zr0.5O2 thin films, contributing to the progress in phase stabilization and switching behavior research.
Article
Chemistry, Multidisciplinary
Charles Otieno Ogolla, Yannik Loth, Tobias Haeger, Cedric Kreusel, Manuel Runkel, Thomas Riedl, Benjamin Butz, Anna Katharina Wigger, Stephan Schaeffer, Peter Haring Bolivar
Summary: In this study, THz-sSNOM was used for nanoscale imaging of CsPbBr3 thin films, and the local THz nanoscale conductivity was derived using a scattering model. The analysis of the obtained signals confirmed the presence of halide vacancies (VBr) and Pb-Pb bonds at the CsPbBr3 grain boundaries, which resulted in charge carrier trapping and nonradiative recombination. This study establishes THz-sSNOM as a powerful analysis platform for thin-film semiconductors like LHPs.
Article
Materials Science, Multidisciplinary
Xuening Yi, Aili Ma, Lianmin Zhang, Yugui Zheng
Summary: This study statistically investigates the orientation-dependent corrosion rate and surface faceting of polycrystalline 90Cu-10Ni in acidic NaCl solution. The results show a clear correlation between crystallographic orientation and surface faceting, as well as a linear relationship between corrosion rate and grain deviation angle. The study provides a simple method for grain orientation identification through etching and offers promising solutions for optimizing corrosion properties through controlled etching.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Elida I. de Obaldia, Jesus J. Alcantar-Pena, Frederick P. Wittel, Jean Francois Veyan, Salvador Gallardo-Hernadez, Yury Koudriavtsev, Dainet Berman-Mendoza, Orlando Auciello
Summary: This paper investigates the effect of hydrogen atom insertion into the grain boundaries of polycrystalline diamond films, focusing on the H atom concentration and its impact on the properties. The study suggests a simple model where two dangling bonds per unit cell of C atoms serve as the site of hydrogen incorporation. The experiment results show that the concentration of H atoms at the grain boundaries is consistent regardless of grain size. Conductive atomic force microscopy and ultraviolet photoelectron spectroscopy techniques were used to observe the electrical behavior and metallic properties of the films.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Multidisciplinary
Yu-Zhou Zhang, Shi-Rong Zhang, Dun-Bo Yu, Yang Luo, Ning-Tao Quan, Wen-Long Yan, Kuo-She Li
Summary: Through experiments conducted under different Ar gas pressures and substrate temperatures, it was found that low Ar gas pressure and sufficient deposition time contribute to the formation of Gd hcp phase with better magnetic properties. High substrate temperature helps reduce the internal stress in Gd films and promotes lattice parameters closer to those of the ideal Gd hcp structure.
Article
Nanoscience & Nanotechnology
Kai Sun, Ming Lei, Lei Yuan, Bo Peng, Miao Yu, Xin-ming Xie, Yu-ming Zhang, Ren-xu Jia
Summary: In this paper, two sandwich structures of Ga2O3-based RRAMs were studied to understand the microscopic-level resistive switching behavior. The results showed that the oxygenation process during magnetron sputtering affected the crystallization orientation of Ga2O3 thin films. The crystalline orientation significantly affected the performance of Ga2O3-based RRAMs and provided new insights into the oxygen vacancy migration paths and associated migration energy barriers of hybrid Ga2O3 thin films.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Physics, Applied
Seung Hwae Heo, Seongheon Baek, Tae Joo Shin, Jae Sung Son
Summary: In this study, textured SnSe2 thin films were fabricated using a solution-processed method, which exhibited strong crystallographic orientation and high electron concentrations. The microstructure of the thin films determined their electronic transport properties, and the optimal structure showed an enhanced thermoelectric power factor. These findings provide a way to enhance the thermoelectric and electronic properties of highly anisotropic materials.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Zachary R. Lindsey, Malachi West, Peter Jacobson, John Robert Ray
Summary: Compared to Si, GaAs has advantages such as high carrier mobility and energy conversion efficiency, making it a leading competitor in optoelectronics and solar energy conversion. This research demonstrates the electrodeposition and controlled alloying of polycrystalline InxGa1-xAs films at ambient pressure and near-room temperature using the electrochemical liquid-liquid-solid (ec-LLS) process.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Rui Pinho, Rui Vilarinho, J. Agostinho Moreira, Fatima Zorro, Paulo Ferreira, Maxim Ivanov, Alexander Tkach, M. Elisabete Costa, Paula M. Vilarinho
Summary: The impact of stress on the performance of lead-free potassium sodium niobate (KNN) thin films was investigated. It was found that films with compressive residual stress showed the lowest dielectric losses, highest electric permittivity, and maximum electric polarization. On the other hand, films with tensile residual stress exhibited the smallest polarization and almost negligible out-of-plane piezoresponse. These findings are important for understanding lead-free ferroelectric/piezoelectric behavior and its potential applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Jae-Hyun Ha, Hyung-Wook Kim, Young-Sik Jo, Seog-Whan Kim, Jung-Il Hong
Summary: The electrical properties of V2O3 are highly sensitive to crystallographic structures, residual strains, and lattice strain, which can be controlled to tune the metal-insulator transition characteristics. The effect of atomic distances on electron band gap plays a key role in understanding the observed changes.
APPLIED MATERIALS TODAY
(2021)
Article
Nanoscience & Nanotechnology
Debjit Ghoshal, Hanzhi Shang, Xin Sun, Xixing Wen, Dongxue Chen, Tianmeng Wang, Zonghuan Lu, Tushar Gupta, Harry Efstathiadis, Damien West, Nikhil Koratkar, Toh-Ming Lu, Shengbai Zhang, Su-Fei Shi
Summary: Through the use of mica as a model substrate, the growth mechanism of large-area epitaxial PbI2 thin films was revealed, uncovering the presence of inversion domain boundaries supporting the growth of epitaxial films. By combining experimental results with first-principles calculations, a deeper understanding of the thermodynamic and kinetic factors governing the growth mechanism was achieved, laying the foundation for the synthesis of high-quality large-area PbI2 thin films on other substrates.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Osmary Depablos-Rivera, Ana Martinez, Sandra E. Rodil
Summary: Bismuth oxide thin films were studied under different deposition conditions, leading to the identification of various crystallographic phases. An unknown broad band at 600 cm(-1) in the Raman spectra was found for all films, attributed to residual weakly bonded [BiOn] units at grain boundaries. Theoretical estimations and density functional approximation were used to support the experimental data, showing good agreement.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Dongwon Shin, Sangmoon Yoon, Sehwan Song, Sungkyun Park, Ho Nyung Lee, Woo Seok Choi
Summary: This study demonstrates the substantial enhancement of the Curie temperature in epitaxial LaCoO3 thin films by changing the crystallographic orientation. The modification of crystal-field energy and charge transfer between Co and O orbitals leads to a considerable enhancement of the ferromagnetic properties, despite the identical nominal degree of epitaxial strain.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Materials Science, Ceramics
Muhammad Faisal Iqbal, Kaleem Ullah, Manzar Mushaf Yaqoob, Abbas Ahmad Khan, Sumbal Farid, Peng Zhu, Deliang Wang
Summary: This study investigates the phonon anharmonicity in sputter-deposited CdSe thin films through in situ temperature-dependent resonance Raman scattering experiment. The results show that with increasing temperature, enhanced anharmonic phonon coupling and phonon decay lead to a decrease in wavenumber and an increase in full-width half maxima of the phonon modes.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Ruyi Zhang, Qian-Ying Ma, Haigang Liu, Tian-Yu Sun, Jiachang Bi, Yang Song, Shaoqin Peng, Lingyan Liang, Junhua Gao, Hongtao Cao, Liang-Feng Huang, Yanwei Cao
Summary: Titanium nitride (TiN) is a promising material with various applications, and the crystallographic orientation has been found to affect its oxidation resistance and plasmonic performance, with (111) orientation showing the highest oxidation resistance, which can reduce the technical requirements for growing high plasmonic performance TiN films.
Article
Engineering, Electrical & Electronic
Zhendong Wu, Hengbo Zhang, Xiaolong Wang, Weisong Zhou, Lingyan Liang, Yanwei Cao, Hongtao Cao
Summary: The study found that using a high-density target for ITZO thin-film transistors can improve overall performance, providing better stability and current ratio, while using a target with poor crystallinity leads to decreased performance.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Chemistry, Physical
Kun Wang, Hongliang Zhang, Guoxin Chen, Tian Tian, Kai Tao, Lingyan Liang, Junhua Gao, Hongtao Cao
Summary: The use of acetic acid as a super-additive solution improves the performance of WO3 cathodes and stabilizes PB anodes in complementary electrochromic devices. The synergistic effects of Li+ and H+ contribute to the enhancement of electrochemical, electrochromic, and cycling stability performance of the whole device. This approach opens up a new way for the construction of high-performance electrochromic devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Zhongguo Li, Zhendong Wu, Xiaolong Wang, Hongtao Cao, Lingyan Liang, Junyi Yang, Yinglin Song
Summary: The study demonstrates the fabrication of amorphous zinc tin oxide thin films with strong visible light absorption using rf magnetron sputtering and rapid postannealing. The ultrafast carrier dynamics of the ternary films were investigated using femtosecond transient absorption spectroscopy, revealing that visible light absorption is induced by band gap reduction rather than defect states in the ZTO film. These findings shed light on the photophysical mechanism of amorphous ZTO films and suggest their potential use in solar cell and photodetector devices.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Ceramics
Yu Pei, Lingyan Liang, XiaoLong Wang, Kun Wang, HengBo Zhang, ZhenDong Wu, HaiJuan Wu, Hongliang Zhang, Junhua Gao, Hongtao Cao
Summary: The study demonstrates that regulating the substrate bias voltage can effectively modify the chemical composition, optical, morphological, and electrical properties of a-GaOx films, reducing defects. Deep-ultraviolet photodetectors based on optimized thin films show high responsivity and rejection ratio for UV/vis. wavelengths.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Hengbo Zhang, Lingyan Liang, Xiaolong Wang, Zhendong Wu, Hongtao Cao
Summary: In this study, amorphous praseodymium-doped In-Sn-Zn-O thin-film transistors (ITZO-Pr TFTs) were fabricated under different RF magnetron sputtering powers to improve negative-bias illumination stress (NBIS) stability. The optimized ITZO-Pr TFTs showed improved field effect mobility and reduced light responsivity compared to ITZO TFTs. Furthermore, Pr doping altered the relaxation processes of photoelectrons and lowered the activation energy, enhancing the NBIS stability of ITZO TFTs.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Chemistry, Physical
Chunjian Wang, Xinlei Zhang, Sheng Liu, Hongliang Zhang, Qiang Wang, Chengli Zhang, Junhua Gao, Lingyan Liang, Hongtao Cao
Summary: This research presents a multifunctional electrochromic energy storage device based on zinc-ion intercalation, showing highly reversible multicolor electrochromism with benefits including high transmittance modulation, excellent coloration efficiency, and superior specific capacitance.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Sheng Liu, Hongliang Zhang, Xin Zhang, Qiang Wang, Chengli Zhang, Ran Jiang, Junhua Gao, Lingyan Liang, Hongtao Cao
Summary: Multivalent chemistry offers intriguing benefits for developing advanced electrochromic and energy storage technologies, and the aluminum-based electrolyte shows attractive high capacity for designing multivalent-ion batteries and devices. However, the understanding of complex electrochemical and mechanical interactions at the electrode/electrolyte interface during cycling is limited. In this study, an Al3+-based half-cell was developed to investigate the interfacial degradation and formation of chelate-like compounds in a high-concentration electrolyte environment. The results provide insights into the intercalation/de-intercalation of Al3+ cations in WO3 electrodes and the instability of the solid electrolyte interphase.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Yu Pei, Lingyan Liang, Xiaolong Wang, Zhenhua Wang, Hengbo Zhang, Junyan Ren, Hongtao Cao
Summary: By using seed-induced engineering, crystalline Ga2O3 material was successfully prepared at a lower processing temperature, showing promising performance in solarblind photodetectors.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Zhongguo Li, Haijuan Wu, Hongtao Cao, Lingyan Liang, Yanbing Han, Junyi Yang, Yinglin Song, Clemens Burda
Summary: In this study, we successfully improved CuI through Sn doping and directly measured the carrier relaxation and interfacial charge-transfer processes. The results show that Sn doping effectively passivates the trap states within the bandgap of CuI and significantly improves transport characteristics. Additionally, it was found that the CuSnI/ZnO heterojunction has a type-II configuration with ultrafast charge transfer, while the charge transfer time of a CuI/ZnO heterostructure is slower.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Lingyan Liang, Hengbo Zhang, Ting Li, Wanfa Li, Junhua Gao, Hongliang Zhang, Min Guo, Shangpeng Gao, Zirui He, Fengjuan Liu, Ce Ning, Hongtao Cao, Guangcai Yuan, Chuan Liu
Summary: The study investigates carrier transport/relaxation bilayer stacked amorphous oxide semiconductor thin-film transistors (AOS TFTs) to solve the mobility-stability conflict. The combination of charge transport layer (CTL) and charge relaxation layer (CRL) made of InSnZnO with different compositions and doping results in transistors with ultrahigh mobility and small voltage shifts. This design concept provides a promising route to address the mobility-stability conflict for high-end displays.
Article
Engineering, Electrical & Electronic
Wanfa Li, Lu Yang, Zhixiang Gao, Junyan Ren, Peixuan Hu, Ting Li, Lingyan Liang, Hongtao Cao
Summary: In this work, we investigate the impact of the source/drain electrode process on the trade-off between mobility and threshold voltage for high-mobility amorphous oxide semiconductor (AOS) thin-film transistors. We find that the Mo S/D electrode process on InSnZnO channels leads to oxygen vacancy gradients and a negative shift in threshold voltage. Oxygen-plasma treatment can make the threshold voltage positive but degrades the mobility. In situ replenishing oxygen by adopting ITO S/D electrodes in an oxygen-containing atmosphere facilitates the achievement of excellent overall electrical characteristics.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhixiang Gao, Xin Ju, Haizhong Zhang, Xiaohan Liu, Hongyu Chen, Wanfa Li, Hongliang Zhang, Lingyan Liang, Hongtao Cao
Summary: This study introduces a bioinspired vision sensor based on InP quantum dots (QDs)/InSnZnO hybrid phototransistors, which exhibit exceptional gate controllability and a robust visible-light response. The phototransistor array successfully replicates the adaptation recognition behaviors of the human retina and achieves an impressive 93% accuracy for digit recognition. These findings contribute to the advancement of bionic neuromorphic chips and offer promising opportunities for future developments in the bioinspired visual system.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Hongliang Zhang, Sheng Liu, Tao Xu, Weiping Xie, Guoxin Chen, Lingyan Liang, Junhua Gao, Hongtao Cao
Summary: The study successfully constructed a novel aluminum-ion electrochromic energy storage device with high optical modulation, coloration efficiency, and enhanced long cycling stability.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Kun Wang, Dong Qiu, Hongliang Zhang, Guoxin Chen, Weiping Xie, Kai Tao, Shanhu Bao, Lingyan Liang, Junhua Gao, Hongtao Cao
Summary: The SnOx/WO3 bilayer cathodes significantly enhance the performance of complementary electrochromic devices with superior long-term cycling stability, high coloration efficiency, and maximum transmittance modulation. This improvement is attributed to the interfacial layer promoting double injection of ions and electrons, balancing ion and electron transport, and serving as a buffer layer to protect the electrode.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2021)
Article
Materials Science, Multidisciplinary
Mengjiao Dong, Liyun Liao, Chensheng Li, Yingxiao Mu, Yanping Huo, Zhong-Min Su, Fushun Liang
Summary: This study investigates the influence of the polarity of polymer matrices on persistent room-temperature phosphorescence (pRTP). It is discovered that intense phosphorescence emission can be achieved in highly polar matrices such as polyacrylic acid (PAA). The dipole-dipole interaction between the polar fluorophore and polar matrix is proposed to stabilize the excited state and facilitate the generation of efficient room-temperature phosphorescence emissions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Han-Jiang Yang, Weijia Xiang, Xiangzhou Zhang, Jin-Yun Wang, Liang-Jin Xu, Zhong-Ning Chen
Summary: This article reports a 2D copper(I)-based cluster material for X-ray imaging, which exhibits ultra-high spatial resolution, high photoluminescence efficiency, and low detection limit. The material shows excellent linear response to X-ray dose rates and light output, and has the best spatial resolution among reported lead-free metal halide hybrids.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Review
Materials Science, Multidisciplinary
Taek Joon Kim, Sang-hun Lee, Dayeong Kwon, Jinsoo Joo
Summary: Donor-acceptor heterostructures using organic-inorganic halide perovskites, two-dimensional transition metal dichalcogenides, pi-conjugated organic small/macro molecules, and quantum dots are promising platforms for exciton-based photonics and optoelectronics. Hetero-interlayer excitons and hetero-intermolecular excitons formed through optical and/or electrical charge transfer in various heterostructures are important quasi-particles for light emission, detection, and harvesting systems.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Liemao Cao, Xiaohui Deng, Zhen-kun Tang, Rui Tan, Yee Sin Ang
Summary: We investigate the interface properties between WSi2N4 and Mo2B, O-modified Mo2B, and OH-modified Mo2B nanosheets. We find that WSi2N4 and Mo2B form n-type Schottky contacts, while functionalizing Mo2B with O and OH leads to the formation of both n-type and p-type ohmic contacts with WSi2N4. Additionally, we demonstrate the emergence of quasi-ohmic contact with ultralow lateral Schottky barrier and zero vertical interfacial tunneling barriers in Mo2B(OH)2-contacted WSi2N4.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ga Eun Kim, Hae-Jin Kim, Heesuk Jung, Minwoo Park
Summary: This study presents a solution to the commercialization challenges of flexible LEDs based on MAPbBr(3) by incorporating polyurethane and an In-Ga-Zn-Sn liquid alloy. The designed devices showed high flexibility, efficiency, and durability, with improved electron injection and reduced defects, making them promising for next-generation displays.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tao Shen, Zeng Wu, Zhen Jiang, Dongsheng Yan, Yan Zhao, Yang Wang, Yunqi Liu
Summary: Sidechain engineering is an important molecular design strategy for tuning the solid-state packing and structural ordering of conjugated polymers. The effects of sidechain direction on the optoelectronic properties of polymers and device performance were systematically investigated in this study. The results demonstrate that tuning the sidechain substitution direction can effectively improve the molecular structure and light absorption properties of polymers, providing new insights for the rational design of functional polymers.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Lotte Clinckemalie, Bapi Pradhan, Roel Vanden Brande, Heng Zhang, Jonathan Vandenwijngaerden, Rafikul Ali Saha, Giacomo Romolini, Li Sun, Dirk Vandenbroucke, Mischa Bonn, Hai I. Wang, Elke Debroye
Summary: In this study, a facile strategy using a non-conductive polymer was proposed to fabricate stable, pinhole-free thick films. The effect of introducing a second phase into CsPbBr3 perovskite crystals on their photophysical properties and charge transport was investigated. The dual phase devices exhibited improved stability and more effective operation at higher voltages in X-ray detection.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jingye Zou, Shenglan Hao, Pascale Gemeiner, Nicolas Guiblin, Omar Ibder, Brahim Dkhil, Charles Paillard
Summary: When rare-earth ions are embedded in a ferroelectric material, their photoluminescence can serve as an all-optical probe for temperature, electric field, and mechanical stimulus. However, the impact of ferroelectric phase transitions on photoluminescence is not well understood. In this study, we demonstrate changes in the photoluminescence of green emission bands during critical ferroelectric transitions in an Er-doped BaTiO3 material. We also find that the intensity ratio and wavelength position difference of sub-peaks provide information on the phase transitions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jiangchao Han, Daming Zhou, Wei Yang, Chen Lv, Xinhe Wang, Guodong Wei, Weisheng Zhao, Xiaoyang Lin, Shengbo Sang
Summary: Rare type-II spin-gapless semiconductors (SGSs) have attracted increasing attention due to their unique spin properties. In this study, the interface contacts and spin transport properties of different devices composed of VSi2P4 ferromagnetic layers were investigated. The results show that VSi2P4 is a promising material for designing vertical van der Waals heterostructures with a giant tunnel magnetoresistance (TMR) in spintronic applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tianqi Zhao, Renagul Abdurahman, Qianting Yang, Ruxiangul Aiwaili, Xue-Bo Yin
Summary: In this study, we designed and prepared Cr and Ba-doped gamma-Ga2O3 nanoparticles to achieve near-infrared emission and enhance the emission intensity. The emission mechanism was proposed based on the trap depth, band gap, and energy levels of Cr ions. The ratiometric temperature sensing and encryption information transfer demonstrated the potential applications of this technology.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Shuvankar Gupta, Jyotirmoy Sau, Manoranjan Kumar, Chandan Mazumdar
Summary: In this study, a new spin-gapless semiconductor material CoFeMnSn is reported, and its stable structure and spin-polarized band structure are determined through experimental realization and theoretical calculations. The compound exhibits a high ferromagnetic transition temperature, making it excellent for room temperature applications. The nearly temperature-independent resistivity, conductivity, and carrier concentration of the compound, adherence to the Slater-Pauling rule, and the high intrinsic anomalous Hall conductivity achieved through hole doping further confirm its spin-gapless semiconductor nature. Additionally, the compound's SGS and topological properties make it suitable for spintronics and magneto-electronics devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ikumi Aratani, Yoji Horii, Yoshinori Kotani, Hitoshi Osawa, Hajime Tanida, Toshiaki Ina, Takeshi Watanabe, Yohko F. Yano, Akane Mizoguchi, Daisuke Takajo, Takashi Kajiwara
Summary: In this study, two-dimensional arrays of single-molecule magnets (SMMs) based on metal-organic frameworks (MOFs) were systematically modified through Langmuir-Blodgett methods and chemical modifications. The introduction of bulky alkoxide groups induced structural changes and perpendicular magnetic anisotropy. This research provides a promising strategy for the construction of high-density magnetic memory devices using molecular spintronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Zonghao Lei, Houhe Dong, Lijie Sun, Bing Teng, Yanfei Zou, Degao Zhong
Summary: Researchers have successfully developed four different up-conversion phosphors based on the Eulytite-type host Ba3Yb(PO4)(3). The optical temperature sensing properties of these phosphors were thoroughly investigated, and it was found that Ba3Yb(PO4)(3):Tm/Er/Ho showed potential for optical temperature measurement applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
C. Roncero-Barrero, M. A. Carvajal, J. Ribas-Arino, I. de P. R. Moreira, M. Deumal
Summary: This study computationally investigates the conductivity of four isostructural compounds with different Se contents, and reveals the parameters that define their conductivity in stable organic radical materials. The results provide insights into the influence of Se content on the conductivity and highlight the importance of considering multiple parameters in understanding the trends in conductivity.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Remi Arras, Kedar Sharma, Lionel Calmels
Summary: In this study, we investigated the interplay between structural defects in NiFe2O4, showing that the complex formed by a Ni-Oh/Fe-Td-cation swap and a neutral oxygen vacancy is more stable than these two isolated defects, and significantly reduces the width of the minority-spin band gap.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
