The High-Pressure Oxide Tb₃ O₅ and its Non-Centrosymmetric Low-Temperature Polymorph-A Comprehensive Study.

ABSTRACT: In this article, the first thoroughly characterized mixed-valent binary rare earth oxide synthesized under high-pressure/high-temperature conditions, and its low-temperature polymorph are reported. Crystalline HT-HP-Tb₃ O₅ has been prepared from an equimolar mixture of Tb₄ O₇ and Tb₂ O₃ under reaction conditions of 8 GPa and 1323 K. Single-crystal X-ray structure determination showed that HT-HP-Tb₃ O₅ crystallizes in the orthorhombic space group Pnma, isopointal to the β-Yb₅ Sb₃ -type structure. Temperature-dependent measurements of the magnetic susceptibility showed that HT-HP-Tb₃ O₅ is a Curie-Weiss paramagnet. The observed effective magnetic moment of μ

SUBMITTER: Glatzle M 

PROVIDER: S-EPMC6220859 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature