Article
Geochemistry & Geophysics
Meng Yu, Qiong-Xia Xia, Yong-Fei Zheng, Zi-Fu Zhao, Yi-Xiang Chen, Ren-Xu Chen, Xu Luo, Wan-Cai Li, Haijun Xu
Summary: Two generations of garnet are identified in a granite and a pegmatite in the Gangdese orogen, with the first generation representing an early nucleation stage related to magmatic-hydrothermal fluids, and the second generation crystallizing in the presence of granitic magma in the pegmatite. The granite garnets display homogeneous characteristics typical of magmatic garnets, while the pegmatite garnet's composition suggests crystallization from the same granitic magma.
AMERICAN MINERALOGIST
(2021)
Article
Physics, Condensed Matter
A. Raja, P. M. Mohammed Gazzali, G. Chandrasekaran
Summary: The study successfully synthesized bismuth-substituted Y3-xBixFe5O12 (0 < x < 1.0) powders using sol-gel auto-combustion method, and systematically investigated their structural, morphological, electrical, and magnetic properties. Bismuth substitution significantly enhanced the magnetic and electrical properties of YIG, making it a potential candidate for microwave and magnetic-optical applications.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Physics, Multidisciplinary
Bruno Tomasello, Dan Mannix, Stephan Gepraegs, Timothy Ziman
Summary: Rare-earth iron garnets are important materials for spintronic devices. This study investigates the formation mechanism of umbrella-like spin structures in these garnets and explores the polarized spin wave dynamics. The findings improve the understanding of non-collinear magnetic phases in rare-earth iron garnets.
Article
Materials Science, Multidisciplinary
M. U. Gonzalez-Rivas, M. A. Ortiz-Medrano, G. Herrera-Perez, G. G. Carbajal-Arizaga, R. Flores-Moreno, L. Fuentes-Cobas, M. E. Fuentes-Montero, M. Garcia-Guaderrama
Summary: A combination of density functional theory and experimental methods was used to study the electronic and crystal structure of Sm3Fe5O12 synthesized through a modified sol-gel method. Experimental results showed that synthesis methods have a significant effect on the band gap of SmIG, with computationally calculated lattice parameters being close to experimental values. A model was proposed to calculate the band gap in Sm3Fe5O12, taking into account the structure's properties and energy level distribution.
Article
Materials Science, Multidisciplinary
Qiaolu Lin, Nannan Xu, Gongping Li, Zhengfang Qian, Huan Liu, Renheng Wang
Summary: In this study, different systems of Cu-doped TiO2 were calculated to understand the magnetic properties, showing that the substitution ratio and defects can affect the ferromagnetic behavior. The interaction between Cu substitution, oxygen vacancy, and carrier-induced polarization were found to be key factors in determining the ferromagnetism in the material.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Physics, Applied
Chandan, Suman Sarkar, Basavaraj Angadi
Summary: Through photoconductivity and electronic transport experiments, it was found that the persistent photoconductivity (PPC) in monolayer molybdenum disulfide is strongly influenced by random fluctuations of local potentials and defect states originating from sulfur vacancies. With increasing temperature, the defect states undergo a transition from localization to extended states, forming a percolation network that profoundly influences the relaxation mechanism. This meticulous study provides a new insight into the origin of PPC in monolayer MoS2.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Hung-Lung Huang, Jen-Chuan Tung, Horng-Tay Jeng
Summary: Rare earth equiatomic quaternary Heusler (EQH) compounds have been theoretically investigated through first-principles calculations, revealing their magnetic ground states and providing insights into their structural and magnetic stabilities for future spintronic applications. These compounds exhibit interesting magnetic properties, with some being ferromagnetic half-metals and rare cases of antiferro-magnetic half-metals or magnetic semiconductors.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Geochemistry & Geophysics
Nicolas Meyer, Gregor Markl, Axel Gerdes, Jens Gutzmer, Mathias Burisch
Summary: This contribution provides new insights into the origin and age relationships of the Geyer tin deposit in Germany. Tin mineralization is found in skarns, greisen, and cassiterite-bearing fluorite-quartz veins. The ages of different stages of skarn alteration and cassiterite vein formation suggest that the tin mineralization is related to a younger magmatic-hydrothermal event. Fluid inclusions analysis indicates that dilution of high-salinity fluids with low-salinity fluids and cooling of the system played an important role in the precipitation of cassiterite in the Geyer Sn system.
MINERALIUM DEPOSITA
(2023)
Article
Chemistry, Inorganic & Nuclear
Hui Wang, Yang Zhang, Koki Tachiyama, Zhaoyang Xia, Jinghong Fang, Qin Li, Guofeng Cheng, Yun Shi, Jianding Yu, Tsukasa Katayama, Shintaro Yasui, Mitsuru Itoh
Summary: GaFeO3-type iron oxides are promising multiferroics with large spontaneous magnetization and polarization, but the difficulties in synthesizing single crystals and high leakage current have hindered achieving key features in the system. By doping Sc into GaFeO3 single crystals, features such as reduced leakage current, large ferroelectric polarization switching, and magnetoelectric coupling have been successfully achieved, demonstrating the potential of multiferroics.
INORGANIC CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Nikola Cichocka, Serhiy Kobyakov, Jaroslaw Kaszewski, Anna Reszka, Roman Minikayev, Kamil Sobczak, Emilia Choinska, Agata Kaminska
Summary: In this study, different forms of Y-Al-O crystals were synthesized using microwave-driven hydrothermal technique and their structural and optical properties were investigated. It was found that the crystals doped with Eu3+ ions can serve as local symmetry sensors, affecting their luminescence spectra.
Article
Chemistry, Physical
Bhawana Mali, K. Ashok, H. Sreemoolanadhan, Suja Elizabeth
Summary: Cationic substitutions in lithium ferrite spinel (LiFe5O8) play a significant role in modifying its magnetic properties, which is crucial for technological applications. By synthesizing LiFe5-xCrxO8 compounds with 0 <= x <= 3 and studying them using various techniques, it was found that replacing Fe with Cr resulted in a decrease in magnetization and magnetic ordering temperature due to the smaller magnetic moment of the Cr cation compared to Fe. Additionally, negative magnetization and spin compensation phenomena were observed within a specific doping concentration range.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Geology
Bernardo Cesare, Nicola Campomenosi, Michael Shribak
Summary: Polychromatic polarizing microscopy is a new optical technique that allows for the inspection of materials with low birefringence, producing colorful images that highlight microstructures that are otherwise undetectable by conventional microscopy. This method provides a fast, non-destructive, and inexpensive alternative to scanning electron microscope-based analyses, opening new avenues for microstructural analysis of geological materials.
Article
Multidisciplinary Sciences
H. Fujiwara, R. Y. Umetsu, F. Kuroda, J. Miyawaki, T. Kashiuchi, K. Nishimoto, K. Nagai, A. Sekiyama, A. Irizawa, Y. Takeda, Y. Saitoh, T. Oguchi, Y. Harada, S. Suga
Summary: Band-gap engineering is a fundamental technique in semiconductor technology, also applicable in the next generation spintronics using the spin degree of freedom. To optimize the spin-dependent electronic structures in operando conditions, an advanced spectroscopic technique using magnetic circular dichroism in resonant inelastic soft X-ray scattering under an external magnetic field has been presented. The technique, known as RIXS-MCD, has successfully demonstrated direct evidence of perfectly spin-polarized electronic structures for the prototypical halfmetallic Heusller alloy Co-2 MnSi, showing promise in probing spin-dependent carriers and band-gap induced in buried magnetic layers in an element specific way under operando conditions.
SCIENTIFIC REPORTS
(2021)
Article
Geochemistry & Geophysics
Urmi Ghosh, Dewashish Upadhyay
Summary: This study investigates the sequence of mineral transformations and changes in fluid composition during skarn formation in the Belka Pahar wollastonite deposit in India. Petrographic studies and major-trace element chemistry of skarn minerals were used to analyze the fluid-rock interaction. The results provide insights into the diffusion and advection of elements in the hydrothermal fluid and the shift in pH. The composition of different generations of garnet serves as a useful proxy for fluid composition and can indicate the associated ore type.
Article
Materials Science, Multidisciplinary
Pankhuri Bansal, Arun Kumar Singh, Ramesh Kumar Singh, Gyaneshwar Sharma, Sanjeev Kumar
Summary: In this study, the magnetoelectric behavior of ferroelectric and ferrimagnetic layered composites was investigated. The self-biasing phenomenon and magnetodielectric characteristics were observed. The robust magnetoelectric coupling in the layered composite is driven by the magnetostriction mechanism. The study suggests that pellet based layered composites could be an effective strategy for self-biased magnetoelectric devices.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Caleb J. Bennett, Helen E. A. Brand, Alexander K. L. Yuen, Maria K. Nicholas, Brendan J. Kennedy
Summary: The temperature dependence of the crystal structure of Potassium Hexaiodoplatinate(IV) between 80 and 500 K is studied. Different crystal structures are observed at different temperatures, including monoclinic, tetragonal, and cubic structures. Accurate determination of the structures of K2PtI6 is important for further theoretical and practical research.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Zhuo Zeng, Jiangfu Zheng, Xiaoming Li, Changzheng Fan, Rongying Zeng, Wenqing Tang
Summary: An efficient method for phosphate removal from wastewater is urgently needed due to the environmental issue caused by excessive phosphorus. In this study, calcium aluminum layered double hydroxides (CaAl-LDHs) and six amino acid intercalated calcium aluminum layered double hydroxides (CaAl-amino acid-LDHs) were prepared and compared for their phosphate adsorption performance. L-Aspartic acid intercalated calcium aluminum layered double hydroxides (CaAl-Asp-LDHs) exhibited the highest phosphate adsorption capacity and faster removal rate compared to CaAl-LDHs. The phosphate adsorption mechanism on CaAl-Asp-LDHs involved electrostatic attraction, hydrogen bonds, complexation, and ion exchange. This environmentally friendly material shows promising potential for efficient phosphate removal from aquatic environments.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Rouzbeh Aghaei Hakkak, Thomas Schleid
Summary: The novel guanidinium hydro-closo-borates with [BnHn]2- (n = 10 and 12) anions were successfully synthesized via direct reaction. The crystal structures exhibit hydrogen bonding interactions and have the potential to facilitate H2 generation.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Liqiang Ma, Pengpeng Wei, Jingfang Li, Liye Liang, Guangming Li
Summary: A novel catalyst, H4PVMo2W9O40@rht-MOF-1, was developed using a one-pot hydrothermal method. It exhibited high efficiency and reusability in esterification reactions.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Liudmila A. Gorelova, Valentiva A. Yukhno, Maria G. Krzhizhanovskaya, Oleg S. Vereshchagin
Summary: Two new Ga-Ge disordered feldspar-related compounds were successfully synthesized using melt crystallization methods. Their stability and thermal expansion properties were studied under high-temperature conditions. The results showed that both compounds are stable within the studied temperature range and exhibit anisotropic thermal expansion.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Seifeddine Bdey, Nesrine Boussadoune, Francois Allard, Jacques Huot, Gabriel Antonius, Noura Fakhar Bourguiba, Pedro Nunez
Summary: The structure of a novel arsenate compound Na3Al3(AsO4)4 has been determined using X-ray diffraction. The crystal exhibits a monoclinic space group with suitable pathways for Na+ ion migration. The accuracy of the structural model was confirmed using various validation tools and density functional theory calculations.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Amit Kumar Atri, Ujwal Manhas, Sumit Singh, Irfan Qadir, Shikha Sharma, Preteek Sharma, Devinder Singh
Summary: This study synthesizes new oxygen deficient triple layered Ruddlesden-Popper (RP) phases via sol-gel method and investigates the effects of Cr3+ doping on their structural, optical, magnetic, and photocatalytic properties. The experimental results demonstrate that Cr3+ doping alters the interactions and leads to excellent photocatalytic performance in some phases.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Dat Le Thanh, Amandine Guiet, Emmanuelle Suard, Romain Berthelot
Summary: In this study, FeNb11O29 powder samples were prepared using a microwave-assisted solid-state synthesis method for the first time. The samples obtained rapidly from submicrometric oxide precursors showed enhanced cycling performance, possibly due to the easier ionic diffusion occurring in the smaller particles.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Raimund Ziegler, Felix R. S. Purtscher, Thomas S. Hofer, Gunter Heymann, Hubert Huppertz
Summary: We have successfully synthesized a new tellurium borate crystal under high-pressure and high-temperature conditions. The crystal structure and theoretical calculations have been thoroughly discussed.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Subhendu Jana, Eric A. Gabilondo, Paul A. Maggard
Summary: This study reports the synthesis and characterization of two previously unknown multinary selenides, Ba8Hf2Se11(Se-2) and Ba9Hf3Se14(Se-2), which display unique structures and optoelectronic properties competitive with existing perovskite-type chalcogenides.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Fei Ruan, Chonggui Lei, Fenglong Zhang, Jinxiao Bao, Fen Zhou, Min Xie, Pengfei Xu, Jianquan Gao
Summary: Studying the diffusion properties of hydrogen is important for designing new proton conductors. In the past, the chemical diffusion coefficient of hydrogen in proton conductors was usually obtained through a manual calculation method, resulting in difficulty in controlling the calculation accuracy. To address this issue, a mathematical algorithm and C language computer program were developed to calculate the chemical diffusion coefficient based on Fick's second law and Romberg numerical integral. The algorithm showed high precision and powerful computing function, and has the potential to replace the manual calculation method in calculating the chemical diffusion coefficient for hydrogen in proton conductors.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Deepika Shanubhogue, Suraj Mangavati, Ashok Rao, Ru-Ting Tsao, Yung-Kang Kuo
Summary: In this study, the effect of Y doping at the Sn-site on the structural, electrical, and low-temperature thermoelectric properties of the Cu2SnSe3 system is investigated. Y-doped compounds Cu2Sn1-xYxSe3 show reduced electrical resistivity, enhanced power factor, and decreased thermal conductivity, resulting in higher ZT values.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Wei Hong, Min Qing, Xun He, Lei Wang, Yu Pu, Qiyu Li, Zhimin He, Qin Dong, Rong Li, Xinglong Gou
Summary: This study developed a simple method to prepare SnS2 nanosheets and assembled them with MXene to form SnS2/MXene. The composite material exhibited abundant active sites, superior electron/ion transfer kinetics, and a unique 2D interlayer structure, resulting in high specific capacity, outstanding rate capability, and excellent cycling stability, with potential applications in LIBs.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Heng-Yu Ruan, Xue-Qian Wu, Tian-Yu Zhang, Yi Yuan, Le Wang, Ya-Pan Wu, Qing-Wen Han, Ruan Chi, Dong-Sheng Li
Summary: Two isostructural metalorganic frameworks (MOFs), CTGU-36-Co and CTGU-36-Ni, were synthesized, and CTGU-36-Ni demonstrated high activity as a molecular electrocatalyst for the methanol oxidation reaction.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Rachid Fakhreddine, Ali Ouasri, Abderrahim Aatiq
Summary: This paper reports the synthesis, structure, and spectroscopic studies of three novel metal orthophosphate salts. The structures of these compounds were refined using X-ray powder diffraction data. The infrared and Raman analysis revealed their symmetries and the UV-visible investigation determined their optical properties.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)