DataVXChemistry of MaterialsPaper
journal article·2019-02-26

Melting of dxy Orbital Ordering Accompanied by Suppression of Giant Tetragonal Distortion and Insulator-to-Metal Transition in Cr-Substituted PbVO3

Takahiro Ogata, Yuki Sakai, Hajime Yamamoto, Satyanarayan Patel, Peter Keil, Jurij Koruza, Shogo Kawaguchi, Zhao Pan, Takumi Nishikubo, Jürgen Rödel, Masaki Azuma

Chemistry of Materials· Volume 31· Issue 4
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Source abstract

Abstract

PbVO3 features giant tetragonal distortion (c/a = 1.23) and spontaneous polarization (Ps = 101 μC/cm2) originating from the ordering of dxy orbital of V4+ with single d electrons. A dedicated study of Cr-substituted PbVO3 prepared by high-pressure synthesis afforded a well-defined variation in c/a ratio. Ensuing changes in atomic structure were correlated to ferroelastic domain switching and a temperature-induced structural transition to a cubic phase accompanied with an insulator-to-metal transition and a negative thermal expansion.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Thermal Expansion and Ionic Conductivity · Ferroelectric and Piezoelectric Materials · Magnetic and transport properties of perovskites and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Kanagawa Institute of Industrial Science and Technology (KISTEC), 705-1 Shimoimaizumi, Ebina, Kanagawa 243-0435, Japan

Institute of Materials Science, Technische Universität Darmstadt, FG Nichtmetallische-Anorganische Werkstoffe, Alarich-Weiss-Strasse 2, D-64287 Darmstadt, Germany

Research and Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyo̅go 679-5198, Japan

Funding

Japan Society for the Promotion of Science · Tokyo Institute of Technology · Alexander von Humboldt-Stiftung · Kanagawa Institute of Industrial Science and Technology

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