Article
Physics, Multidisciplinary
Attila Szabo, Fabio Orlandi, Pascal Manuel
Summary: We study the near-neighbor and dipolar Ising models on a lattice of corner-sharing octahedra. The frustration between antiferromagnetism and a spin-ice-like three-in-three-out rule leads to a Coulomb phase with correlated dipolar and quadrupolar spin textures, showing distinct neutron-scattering signatures. Strong further-neighbor perturbations result in independent ordering of the two components, leading to unusual multi-k orders. We propose experimental realizations of our model in rare-earth antiperovskites.
PHYSICAL REVIEW LETTERS
(2022)
Review
Chemistry, Inorganic & Nuclear
Subramani Supriya
Summary: Rare earth-coordinated titanium pyrochlores are important materials for electronic applications in inorganic ceramics. These titanate pyrochlores exhibit high ionic conductivity, low activation energy, chemical stability, mechanical integrity, and compatibility with electrode materials. They are suitable for electrolyte applications and competitive in high-temperature solid oxide fuel cells. This review article summarizes the crystal structure, coordination chemistry of rare earth elements, and various properties, including dielectric response, of pyrochlore materials. It also highlights their microcrystalline structures and recent advancements, introduces and evaluates rare earth pyrochlore titanates applications, and discusses future developments and doping strategies.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Materials Science, Ceramics
Saisai Zhu, Jinpeng Zhu, Songbo Ye, Kaijun Yang, Mingliang Li, Hailong Wang, Jilin He
Summary: High-entropy rare earth titanates with single-phase and high thermal stability were successfully designed and synthesized. The lattice distortion was quantitatively described by mass and size disorder. Due to the disorder of A-site ions, severe lattice distortion occurred in specific crystal planes, resulting in lower thermal conductivity. This high-entropy rare earth titanate showed lower thermal conductivity, higher thermal expansion coefficient, and excellent high-temperature stability compared to YSZ, making it a promising material for thermal protection applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
A. B. Rinkevich, D. Perov
Summary: The study investigated the dependencies of alternating current magnetic susceptibilities of nanocomposite rare-earth titanates on magnetic fields. The results showed that the field dependence of the real part of the susceptibility is approximated by a Cole-Cole formula and is similar to the field dependence of the differential susceptibility.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Physics, Multidisciplinary
Fehime Hayal Gecit, Suleyman Cabuk
Summary: This study comparatively examines the mechanical and thermal properties of rare-earth scandate LnScO(3) compounds using ab initio calculation. The results indicate mechanical stability of these compounds and discuss their anisotropic properties. Many physical properties are calculated for the first time, and comparisons with experimental and theoretical data are made.
Article
Chemistry, Physical
Abdul Majid, Amber Batool, Salah Ud-Din Khan, Ashfaq Ahmad
Summary: The study investigated the structural, electronic, and magnetic properties of rare earth hexaboride (RE)B(6) series of compounds using first-principles approach, revealing their characteristics as topological insulators. The application of spin-orbit coupling also uncovered unique electron structures in certain cases.
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2021)
Article
Chemistry, Physical
Yuhao Wang, Yu-Jun Jin, Tao Wei, Zhi-Gang Wang, Gui Cao, Zhao-Ying Ding, Zhan-Guo Liu, Jia-Hu Ouyang, Yu-Jin Wang, Ya-Ming Wang
Summary: Eighteen different 5-component equimolar rare earth zirconates were successfully synthesized. Among them, 5 have a high-entropy fluorite structure, 8 have a high-entropy pyrochlore structure, and the remaining 5 have dual-phase structures. The study explores the synergistic effects of the average cation radius ratio, configuration entropy, and size disorder on the formation ability of multi-component rare earth zirconates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Geochemistry & Geophysics
Li Zhang, Wei Han, Min Peng, Fei Liu, Yuntao Song, Xiujin Liu, Qiaolin Wang, Kuo Li, Dongjie Zhao, Wei Yang, Yuanli Qin, Hangxin Cheng
Summary: The study found significant variations in rare earth element concentrations and distributions in rocks, ores, and soils from different parent materials in the Baoshan area. Soils overlying carbonate formations had the highest REE concentrations, while soils overlying basalts had the lowest. Enrichments in light REEs, negative Eu anomalies, and slight Ce anomalies were observed in the soils.
GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS
(2021)
