EFG DETERMINATION IN MAGNETIC-FIELD ORIENTED POWDERS OF YBA2((CU1-XFEX)-FE-57)(3)O-7-Y SUPERCONDUCTORS - A TEST OF EXISTING MODELS

被引：1

作者：

BOTTYAN, L ^{[1
]}

DENGLER, J ^{[1
]}

FAIGEL, G ^{[1
]}

KANER, NE ^{[1
]}

NAGY, DL ^{[1
]}

RITTER, G ^{[1
]}

ROHLICH, U ^{[1
]}

机构：

[1] UNIV ERLANGEN NURNBERG,INST PHYS,D-91058 ERLANGEN,GERMANY

来源：

HYPERFINE INTERACTIONS | 1994年 / 93卷 / 1-4期

关键词：

D O I：

10.1007/BF02072922

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

YBa2(Cu1-xFex)(3)O-7-y, powder samples with n = 0.02 and 0.03 were uniaxially c-aligned in epoxy in a magnetic field of 7.5 T. An X-ray map of the distribution of the orientation of the crystallographic c-axes of the individual crystallites was determined. Fe-57 Mossbauer spectra were recorded at room temperature as a function of the angle between the texture axis and the observation direction. Different sets of EFG parameters were selected from the literature and the fit constraints were equally set for all. Using a model of the measured texture function and accounting for polarization-dependent blackness effects, a simultaneous fit of the Mossbauer spectra results in minimum chi(2) for the EFG set determined previously from CEMS data on this films.

引用

页码：1647 / 1651

页数：5

共 14 条

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