A SANS STUDY OF THE MAGNETIC PHASE-TRANSITION IN AMORPHOUS (FEXNI1-X)78B10SI12

被引：2

作者：

HANNON, AC

HAGEN, M

COWLEY, RA

STANLEY, HB

COWLAM, N

机构：

[1] UNIV KEELE,DEPT PHYS,KEELE ST5 5BG,STAFFS,ENGLAND

[2] UNIV OXFORD,CLARENDON LAB,OXFORD PHYS,OXFORD,ENGLAND

[3] ICI PLC,CORP COLLOID SCI,RUNCORN WA7 4QE,CHESHIRE,ENGLAND

[4] UNIV SHEFFIELD,DEPT PHYS,SHEFFIELD S3 7RH,S YORKSHIRE,ENGLAND

来源：

PHYSICA B | 1992年 / 180卷

关键词：

D O I：

10.1016/0921-4526(92)90717-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The magnetic critical scattering from amorphous (FexNi1-x)78B10Si12 with x = 0.125 and 0.25 has been studied by small angle neutron scattering (SANS). For the x = 0.125 sample, the SANS suggests a ferromagnetic phase transition at T(c) = 132.33 +/- 0.33 K with d = 3 Heisenberg model critical exponents above T(c) and gapless spin waves below T(c). However, the x = 0.25 sample does not undergo a ferromagnetic transition and the inverse correlation length saturates at 0.007 angstrom-1 for temperatures below 343 K.

引用

页码：230 / 232

页数：3

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