Metathetical reaction growth and characterization of delafossite-type Pd(Co,Mg)O2 single crystals

被引:8
作者
Hasegawa, M
Tanaka, M
Takei, H
机构
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
[2] Toshiba Corp, Semicond Co, Isogo Ku, Yokohama, Kanagawa 2358522, Japan
[3] Osaka Univ, Grad Sch Sci, Toyonaka, Osaka 5600043, Japan
关键词
characterization; doping; X-ray diffraction; growth from solutions; single crystal growth; oxides;
D O I
10.1016/S0022-0248(01)01371-9
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
Single crystals of magnesium substituted PdCoO2 have been successfully grown using a metathetical reaction. The crystals show silvery metallic lustre and have a form of habitual polyhedral shape. The maximum size of the grown crystals is about 1.0 x 1.0 x 0.3 mm(3), which is larger than pure PdCoO2 crystals. Polygonal growth steps on the surface and bunchings on the side wall of the crystals are observed. This indicates that the crystals are grown layer by layer. The chemical composition of the crystals inspected by scanning electron microscope-electron probe microanalyzer inductively coupled plasma spectrocopy ICP and Thermo-gravimetry-differential thermal analysis is Pd1.000Co0.982Mg0.018O2.00 This suggests that magnesium ions substitute cobalt ions. Magnetic susceptibilities in a magnetic field of 1 T show the Curie-Weiss type temperature dependence. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:277 / 280
页数:4
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