Open AccessStructure and physical properties of K0.63RhO2 single crystals
Author(s) -
ShuHua Yao,
B. B. Zhang,
Jian Zhou,
Y. B. Chen,
S. T. Zhang,
ZhengBin Gu,
SongTao Dong,
Y. F. Chen
Publication year - 2012
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4767464
Subject(s) - seebeck coefficient , monoclinic crystal system , materials science , antiferromagnetism , rietveld refinement , thermoelectric effect , electrical resistivity and conductivity , condensed matter physics , flux method , metal , thermal conductivity , single crystal , crystal structure , crystallography , thermodynamics , chemistry , metallurgy , physics , quantum mechanics , composite material
K0.63RhO2 single crystals were successfully grown by the flux method. Rietveld refinement of power X-ray diffraction patterns suggests that K0.63RhO2 belongs to the monoclinic P63mmc space group. Transport measurements on K0.63RhO2 revealed metallic behavior. The temperature-dependent resistance is well fitted by a different power law in two different temperature ranges. Antiferromagnetic ordering is observed in the ab-plane of K0.63RhO2 below 50 K. The most attractive feature of K0.63RhO2 is its significant Seebeck coefficient at room temperature (46 μV/cm), which is much greater than that of normal metals. Considered all together, the metallic conductivity, the significant Seebeck effect, and the non-hygroscopic properties of K0.63RhO2 make it a promising candidate material for thermoelectric applications
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