Article
Materials Science, Multidisciplinary
Kengo Sakamoto, Manabu Hagiwara, Hiroki Taniguchi, Shinobu Fujihara
Summary: In this study, Bismuth silicate (BSO) ceramics were successfully fabricated for the first time using a sol-gel technique, achieving a high relative density and preventing thermal decomposition at low temperature. The BSO ceramic exhibited superior temperature stability and high energy storage efficiency, attributed to a sharp phase transition and unique polarization hysteresis loops.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
O. D. Arefieva, M. S. Vasilyeva, I. Lukiyanchuk, E. S. Sedinkina, L. A. Zemnukhova, A. Pisartseva
Summary: Bi2O3/Bi2SiO5 oxide heterostructure photocatalysts were prepared by mechanical stirring of anhydrous bismuth nitrate and biogenic silica from rice husk, with silica content affecting sample morphology and providing 78-87% Methyl Orange degradation under UV irradiation.
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Mingyang Tang, Linjiang Yu, Yifei Wang, Jingwen Lv, Jia Dong, Biao Guo, Fukang Chen, Qiao Ai, Yu Luo, Quan Li, Kun Yu, Fei Wu, Gang Liu
Summary: The introduction of Ba(Zn1/3Nb2/3)O-3 (BZN) disrupts long-range order domains and improves the energy storage performance of lead-free ceramics. With increased BZN content, the dielectric relaxation behavior is enhanced, hysteresis loop becomes thinner, remnant polarization decreases, and the breakdown electric field increases to 180 kV/cm in 15BZN.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Hong Ming, Yifei Zhao, Yayun Zhou, Maxim S. Molokeev, Yuanjing Wang, Enhai Song, Qinyuan Zhang
Summary: A chemical group substitution strategy using inorganic polyhedrons as the smallest chemical units during the doping process can effectively prevent the generation of defects and facilitate the incorporation of activators, resulting in extremely high luminescence efficiency.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Candida Pipitone, Francesco Giannici, Antonino Martorana, Gonzalo Garcia-Espejo, Silvia Carlotto, Maurizio Casarin, Antonietta Guagliardi, Norberto Masciocchi
Summary: This study reports the synthesis and crystal structure characteristics of novel lead and bismuth hybrid iodide and bromide pseudo-perovskites. These compounds exhibit diverse crystal structures, which can be described by specific formulas. The ionic defectivity in these systems leads to different chain configurations, resulting in unique X-ray diffraction patterns. Additionally, the optical band gap of iodide samples decreases with increasing Bi3+ content.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Yun Zhang, Xi Jiang, Xinrui Guo, Shihua Ding, Tianxiu Song
Summary: The effects of Li+ heterovalent substitution for Mg2+ in Mg1-xLixZrTa2O8-x/2 (x = 0-0.07) ceramics were investigated. The site occupancy and existence of Li+ were examined using VASP and XPS. Single phase solid solution with wolframite structure was identified. Li+ substitution reduced the densification temperature and significantly increased the Qxf. The dielectric constant er decreased due to ionic polarizability. The variations in resonant frequency temperature coefficient Tf were explained by oxygen octahedral distortion and bond energy. Li substitution was effective and inexpensive for enhancing dielectric properties and optimizing densification temperature in MgZrTa2O8 ceramics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Xuming Luo, Xianzhang Wu, Jiayuan Xiang, Dan Cai, Min Li, Xiuli Wang, Xinhui Xia, Changdong Gu, Jiangping Tu
Summary: A novel Li2.9In0.9Zr0.1Cl6 electrolyte is synthesized through Zr substitution, showing nearly double the ionic conductivity of original Li3InCl6. The enhanced conductivity is attributed to enlarged interplanar spacing, increased lattice volume, and improved concentration of lithium ion vacancies due to the introduction of higher-valence Zr4+.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Ting Tang, Dong Liu, Qi Wang, Lei Zhao, Bo-Ping Zhang, He Qi, Li-Feng Zhu
Summary: The practical applications of dielectric capacitors have been hindered by challenges of remanent polarization and breakdown strength. By using heterovalent ion substitution engineering along with MLCC technology, high energy storage capabilities, efficiency, and density can be achieved in dielectric capacitors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Rachna Selvamani, Adityanarayan H. Pandey, S. M. Gupta, A. K. Karnal
Summary: The study investigated the La-substituted Bi4-xLaxTi3O12 lead-free ceramics through structural, microstructural, complex impedance spectroscopy, and dielectric relaxation studies, revealing the substitutional site preference of La3+ ions, temperature-dependent ferroelectric to relaxor crossover, and random weak interaction between small polar regions.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Environmental
Jianyan Ding, Ziyi An, Zheng Wang, Yongpeng Dai, Weifang Yu, Jianjun Deng, Yanbing Lai, Xinglin Huang, Quansheng Wu
Summary: By choosing Gd3TaO7 as the matrix, researchers have successfully achieved multi-color light emission in Bi3+-activated phosphors. They found that the luminescence behavior of Bi3+ ions in this system is influenced by multiple factors, especially the interaction between the 3P1 state, metal-to-metal charge transfer state, and Bi-Bi dimers.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Zhen Chang, Dexu Zheng, Shuai Zhao, Le Wang, Sajian Wu, Lu Liu, Zhipeng Li, Lu Zhang, Qingshun Dong, Hui Wang, Shiwei Wang, Kai Wang, Shengzhong (Frank) Liu
Summary: An effective additive molecule, tris(2,4-pentanedionato)gallium (TPGa), is designed to upgrade the quality of Sn-Pb alloyed perovskite films, resulting in improved efficiency and stability of perovskite solar cells. The addition of Ga3+ boosts the formation energy of Sn vacancies and heals trap states.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Yuanting Wu, JinRong Wang, Bailin Zeng, Mengyao Guan, Lihui Guo
Summary: In this study, a simple joint post-modification method using hydrochloric acid and dopamine hydrochloride under acidic conditions was proposed. The resulting curved microflower photocatalyst exhibited a double heterojunction structure and a large specific surface area. The synergistic effect of morphology regulation and interface optimization led to a significant enhancement in degradation rate, making the new microflower photocatalyst highly efficient in degrading various catalysts.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
D. Sidharth, Bhuvanesh Srinivasan, A. S. Alagar Nedunchezhian, P. Thirukumaran, M. Arivanandhan, R. Jayavel
Summary: In this study, eco-friendly Bi substituted ZnSb samples were prepared by a novel hydrogen decrepitation method and analyzed for their structural and morphological properties. The experimental results demonstrated that bismuth substitution is a promising approach to enhance the thermoelectric properties of ZnSb.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Ceramics
Hairen Chen, Xiaoyi Huang, Ke Zhang, Rui Duan, Hao Ke, Jingfei Chen, Shifeng Zhou
Summary: The synthesis and spectral analysis of Bi-Tm co-doped germanium silicate glasses were reported, achieving broadband near-infrared emission. By tuning the excitation wavelength, emission in the 1000-2000 nm range with smooth shape was achieved, providing valuable reference for novel broadband gain materials.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
M. A. Darwish, V. A. Turchenko, A. T. Morchenko, V. G. Kostishyn, A. V. Timofeev, M. I. Sayyed, Zhipeng Sun, S. V. Podgornaya, E. L. Trukhanova, E. Yu. Kaniukov, S. V. Trukhanov, A. V. Trukhanov
Summary: The study demonstrates that tin-substituted hexaferrites can be used for both electromagnetic shielding and absorbing materials, showing potential for absorbing electromagnetic radiation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Correction
Nanoscience & Nanotechnology
Shunsuke Kobayashi, Hideaki Watanabe, Takeharu Kato, Fuminori Mizuno, Akihide Kuwabara
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Sangwook Kim, Ryuki Miyauchi, Yukio Sato, Hyunwook Nam, Ichiro Fujii, Shintaro Ueno, Yoshihiro Kuroiwa, Satoshi Wada
Summary: Piezoelectric materials are crucial in various applications, but there are still unanswered questions regarding their physical origin. This study utilizes high-energy synchrotron radiation X-ray diffraction to investigate the response of BiFeO3-BaTiO3 piezoelectrics and the intrinsic/extrinsic contributions to electric fields. The findings suggest that Bi3+-ion disordering plays a significant role in realizing piezoelectricity and nanodomains, and there is an extrinsic effect on the rearrangement of nanodomains. Understanding these effects is important for the development of next-generation Bi-based lead-free piezoelectric ceramics.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jun Harada, Haruka Takahashi, Rin Notsuka, Mika Takehisa, Yukihiro Takahashi, Tomoyasu Usui, Hiroki Taniguchi
Summary: A new ionic molecular ferroelectric crystal with remarkable malleability and multiaxial ferroelectricity is discovered, which can be processed into transparent bulk crystalline plates with high ferroelectric performance and spontaneous polarization. This material represents a promising functional material due to its large-scale availability and processability into various bulk crystalline forms.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Jianyue Jiao, Zhigang Zhang, Yoshihiro Kuroiwa, Enyue Zhao, Wen Yin, Baotian Wang, Fangwei Wang, Jinkui Zhao, Xingwang Zhang, Xiaoling Xiao
Summary: In this study, it is demonstrated that the symmetry of locally ordered lattice can be tuned to enable robust anionic redox reaction (ARR) structure in Li-rich Li-Mn-O (LR-LMO) cathodes. By employing a twofold symmetry locally ordered lattice, the LR-LMO cathode exhibit a reversible capacity of 260 mAh/g at 0.1C and capacity retention of 78% after 100 cycles at 1C.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Physics, Applied
A. M. Divakaran, R. Okazaki, F. Nakamura
Summary: The resistivity of materials is a fundamental property of solids and is widely used in both physics and engineering applications. In this study, a rotational square four-point probe method was used to evaluate the in-plane resistive anisotropy of Ca2RuO4 crystals. The results showed a clear sinusoidal dependence of resistance, confirming the resistive anisotropy in the system. The resistance data was fitted with a theoretical equation to extract the resistive anisotropy, which matched with the actual resistivity of the sample.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Shota Kakimoto, Yujiro Hashimoto, Taro Kuwano, Koji Kimura, Kouichi Hayashi, Manabu Hagiwara, Kazuhiko Deguchi, Hiroki Taniguchi
Summary: Co-doping of heterovalent ions to rutile-type TiO2 has been studied to design high-permittivity materials with local structure engineering. However, the role of co-dopants in permittivity enhancement is still unclear. Dielectric measurements were performed on Nb + X (X = Al, Ga, In) co-doped and Nb-doped TiO2 single crystals before and after annealing to investigate the effects of co-dopants. The results suggest that the huge permittivity observed in the as-grown samples is due to thermally excited carriers, while the post-annealed samples show recovery of the insulating property through migration of X cations into the single crystal.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Physics, Applied
Lin Wu, Sangwook Kim, Chikako Moriyoshi, Muneyasu Suzuki, Kentaro Shinoda, Rintaro Aoyagi, Jun Akedo, Yoshihiro Kuroiwa
Summary: The temperature-dependent structural variations of lead titanate (PT) ceramic coatings formed at room temperature via aerosol deposition were investigated to assess the stability of the ferroelectric phase. The results showed that the as-deposited film had a c-axis orientation, which may be attributed to the anisotropic structural characteristics of the crystal. The aerosol deposition method stabilizes the ferroelectric phase up to a higher temperature, although the spontaneous polarization is suppressed.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Reiji Okada, Hiroto Isomura, Yoshiki J. Sato, Ryuji Okazaki, Masayuki Inoue, Shinya Yoshioka
Summary: Researchers have fabricated transparent low-layered crystals of a misfit thermoelectric oxide, which exhibite high transparency and low electrical resistivity due to their single-crystalline structure. These materials have a higher figure of merit compared to previous reports and may serve as a unique class of multi-functional transparent thermoelectric oxides.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Susumu Fujii, Yuta Shimizu, Junji Hyodo, Akihide Kuwabara, Yoshihiro Yamazaki
Summary: This study presents a machine learning approach to accelerate the exploration and discovery of unconventional proton-conducting inorganic solid electrolytes. By considering dopant dissolution and hydration reactions, the machine learning models provide quantitative predictions and physical interpretations for synthesizable host-dopant combinations with hydration capabilities. Utilizing these insights, two unconventional proton conductors are discovered. This study demonstrates an efficient approach for exploring novel inorganic materials.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yoshiki Izumi, Fumitaka Takeiri, Kei Okamoto, Takashi Saito, Takashi Kamiyama, Akihide Kuwabara, Genki Kobayashi
Summary: Hydride ion conductors, especially the fluorite-type LaH3-delta series, have shown high conductivity around room temperature. However, their non-stoichiometric nature poses challenges for their use as solid electrolytes. In this study, Sr-substituted LaH3-delta with slight O2- incorporation was synthesized, demonstrating H- conductivity at room temperature. This achievement is a significant milestone in the development of electrochemical devices that utilize its strong reducing ability.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Nur Ika Puji Ayu, Fumitaka Takeiri, Takafumi Ogawa, Akihide Kuwabara, Masato Hagihala, Takashi Saito, Takashi Kamiyama, Genki Kobayashi
Summary: New solid compounds A(3-x)GaO(4)H(1-y) (A = Sr, Ba 0.15, y SIM;0.3) have been synthesized, which are the first oxyhydrides containing gallium ions. The compounds adopt an anti-perovskite structure consisting of hydride-anion-centered HA(6) octahedra with tetrahedral GaO4 polyanions, showing partial defect in A- and H-sites. The thermodynamic stability and band gap of stoichiometric Ba3GaO4H are supported by formation energy calculations, and annealing Ba powder suggests H- desorption and O2-/H- exchange reactions.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Koji Okada, Susumu Fujii, Cedric Tassel, Shenghan Gao, Hiroki Ubukata, Wenli Pan, Kentaro Yamamoto, Yoshiharu Uchimoto, Akihide Kuwabara, Hiroshi Kageyama
Summary: Unlike perovskite oxides, antiperovskites M(3)HCh and M(3)FCh (M = Li, Na; Ch = S, Se, Te) mostly maintain their ideal cubic structure due to anionic size flexibility and low-energy phonon modes that promote their ionic conductivity. This study demonstrates the synthesis of potassium-based antiperovskites K3HTe and K3FTe, which maintain a cubic symmetry and can be prepared at ambient pressure, unlike most other M(3)HCh and M(3)FCh compounds that require high pressure synthesis. A systematic comparison of cubic M3HTe and M3FTe (M = Li, Na, K) reveals a contraction in telluride anions in the order of K, Na, Li, with a pronounced contraction in the Li system.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Akitoshi Nakano, Ichiro Terasaki, Hiroki Taniguchi
Summary: We investigated the physical properties of oxygen-deficient perovskite-type Sr10Ga6Sc4O25 by measuring dielectric permittivity, pyroelectric current, and X-ray diffraction (XRD) using a polycrystalline sample. The dielectric permittivity showed an anomaly at around 310 K, and switchable pyroelectric current indicated a ferroelectric phase transition. XRD measurements revealed that the phase transition was of second order, without a discontinuous jump in cell volume. The possible low and high temperature space groups were discussed based on group theory.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Inorganic & Nuclear
Kazuki Shitara, Akihide Kuwabara, Naoyoshi Nunotani, Muhammad Radzi Iqbal Bin Misran, Miki Inada, Tomoki Uchiyama, Yoshiharu Uchimoto, Nobuhito Imanaka
Summary: The ionic conduction mechanism in M2+-doped lanthanum oxybromide (LaOBr) was investigated through theoretical calculations and experimental analyses. The presence of dopant ions resulted in significant changes in the positions of La3+ ions, which were experimentally supported. The migration of Br- ions was found to be more probable than that of O2- ions. The evaluation of association and migration energies showed good agreement with experimental results.
DALTON TRANSACTIONS
(2023)
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)