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High-pressure synthesis, crystal structure, and magnetic properties of KSbO-type 5 oxides KOsO and BiOsO. | LitMetric

High-pressure synthesis, crystal structure, and magnetic properties of KSbO-type 5 oxides KOsO and BiOsO.

Sci Technol Adv Mater

Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan; Graduate School of Chemical Sciences and Engineering, Hokkaido University, North 10 West 8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan.

Published: December 2014

AI Article Synopsis

Article Abstract

5 Solid-state oxides KOsO (Os; 5) and BiOsO (Os; 5) were synthesized under high-pressure and high-temperature conditions (6 GPa and 1500-1700 °C). Their crystal structures were determined by synchrotron x-ray diffraction and their 5 electronic properties and tunnel-like structure motifs were investigated. A KSbO-type structure with a space group of -3 and -3 was determined for KOsO and BiOsO, respectively. The magnetic and electronic transport properties of the polycrystalline compounds were compared with those obtained theoretically. It was revealed that the 5 tunnel-like structures are paramagnetic with metallic charge conduction at temperatures above 2 K. This was similar to what was observed for structurally relevant 5 oxides, including BiReO (Re; 5) and BaIrO (Ir; 5). The absence of long-range magnetic order seems to be common among 5 KSbO-like oxides, regardless of the number of 5 electrons (between 2.6 and 4.3 per 5 atom).

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5090388PMC
http://dx.doi.org/10.1088/1468-6996/15/6/064901DOI Listing

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