151Eu Mossbauer study of the CuEuO2+δ delafossite

被引：4

作者：

Lindén, J ^{[1
]}

Isawa, K

Miettinen, J

Karppinen, M

Yamauchi, H

机构：

[1] Abo Akad, Dept Phys, FIN-20500 Turku, Finland

[2] Tohoku Elect Power Co Inc, Ctr Res & Dev, Aoba Ku, Sendai, Miyagi 981, Japan

[3] Helsinki Univ Technol, Dept Tech Phys, FIN-02150 Espoo, Finland

[4] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

来源：

PHYSICA B | 1999年 / 271卷 / 1-4期

关键词：

Mossbauer spectroscopy; hyperfine interaction; delafossite;

D O I：

10.1016/S0921-4526(99)00225-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Eu-based delafossite samples CuEuO2+delta, with delta = 0.00 and 0.67 were synthesized for Eu-151 MBssbauer investigations. The value of the quadrupole coupling constant for the as-synthesized stoichiometric (delta = 0.00) and the oxygen-loaded (delta = 0.67) samples was eQ(g) V-zz = 9.4(2) and 6.1(2) mm/s, respectively. The asymmetry parameter eta was 0.44(4) and 0.76(4), respectively. Lattice point-charge calculations reproduced the positive eQ(g) V-zz values and the increase of the asymmetry parameter eta upon oxygen loading. (C) 1999 Elsevier Science B.V. All rights reserved.

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收藏

页码：223 / 229

页数：7

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