MODEL-FREE POLARIZED NEUTRON-DIFFRACTION STUDY OF AN ACENTRIC CRYSTAL - METAMAGNETIC UCOAL

被引：26

作者：

PAPOULAR, RJ ^{[1
]}

DELAPALME, A ^{[1
]}

机构：

[1] CENS,LAB LEON BRILLOUIN,CEA,CNRS,F-91191 GIF SUR YVETTE,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.72.1486

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

For the first time, a model-free procedure is developed to analyze polarized neutron diffraction data pertaining to acentric crystals. It consists of a two-step process, featuring first an effective flipping ratio and second a linear inverse problem. The latter is solved either by a new generalized inverse Fourier transform or by using maximum entropy. Using metamagnetic UCoAl as a test case, we find the following results: (i) the U and Co(2) moments increase with an applied magnetic field whereas the Co(1) moment remains almost constant; (ii) the U and Co(2) magnetic densities are weakly anisotropic.

引用

页码：1486 / 1489

页数：4

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