HEAVY-IONS IRRADIATION EFFECTS IN HIGH-TC SUPERCONDUCTORS - MOSSBAUER STUDY OF FE-DOPED 1.2.3 PHASES YBA2CU3-XFEXO7-DELTA IRRADIATED BY 3.5 GEV-XENON IONS

被引:9
作者
BOURGAULT, D [1 ]
NGUYEN, N [1 ]
GROULT, D [1 ]
BOUFFARD, S [1 ]
PROVOST, J [1 ]
HERVIEU, M [1 ]
TOULEMONDE, M [1 ]
RAVEAU, B [1 ]
机构
[1] INST SCI MAT & RAYONNEMENT,CRISTALLOG & SCI MAT LAB,F-14032 CAEN,FRANCE
来源
RADIATION EFFECTS AND DEFECTS IN SOLIDS | 1990年 / 114卷 / 04期
关键词
Fe-doped superconductors; heavy ions; Mossbauer spectroscopy; nuclear tracks;
D O I
10.1080/10420159008213134
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
3.5 GeV-Xenon ions-induced defects in Fe-doped 1.2.3 phases YBa2Cu3-xFexO7-δwith × = 1, 0.3 and 0.45 have been investigated by means of in situ resistance measurements at 100 K and Mossbauer spectroscopy at 300 K. Beside the exponential dependence of the resistance with Xe-fluence, the radiation effects result in the appearance on the Mossbauer absorption spectra of a fourth quadrupole doublet D4(δ≥0.3 mm/s, ΔQ41.1 mm/s) whose relative intensity increases with dose i.e. with latent track density. Concerning the distribution of Fe species on Cu sites in the unperturbed part of the sample, a strong interrelation between the variations of the relative areas of quadrupole doublets D, (ΔQ1~ 1.1 mm/s) and D3(ΔQ3~ 0.3 mm/s) under irradiation lead us to assign the corresponding Fe species substituted on Cu(1) sites ([CuCU], chains of corner sharing Cuo4groups), in agreement with heat treatment analysis. © 1990, Taylor & Francis Group, LLC. All rights reserved.
引用
收藏
页码:315 / 326
页数:12
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