63,65Cu NQR study of Zn and Ni doped YBa2Cu2O3O7

被引：0
|
作者：
Han, KS
Mean, BJ
Lee, KH
Kim, DH
Seo, SW
Lee, M [1 ]
Lee, WC
Cho, JS
机构：
[1] Konkuk Univ, Dept Phys, Seoul 143701, South Korea
[2] Sook Myung Woomens Univ, Dept Phys, Seoul 140742, South Korea
[3] Suwon Sci Coll, Dept Informat Commun, Kyong Gi 445960, South Korea
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2000年 / 341卷
关键词：
D O I：
10.1016/S0921-4534(00)01012-1
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Cu-63,Cu-65 NQR measurements have been performed on Zn and Ni doped. YBCO (YBa2Cu3-xMxO7, M=Zn or Ni, x=0.0 similar to 0.09). Distinctive differences due to the nonmagnetic Zn and the magnetic Ni dopants substituted for copper are compared microscopically based on. the plane and the chain Cu-63,Cu-65 NQR data. Both spin-lattice and spin-spin relaxation rates decrease for Zn doped YBCO whereas they increase for Ni doped YBCO. From the isotopic ratio of Cu-63,Cu-65 spin-lattice relaxation rate, a dominant relaxation mechanism is determined as a function of concentration and discussed in conjunction with magnetic moments of the dopants.
引用
收藏
页码：2123 / 2124
页数：2
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