A TEM AND CEMS STUDY OF BCC FE-NI-CR THIN-FILMS

被引：13

作者：

BOUBEKER, B

EYMERY, JP

DENANOT, MF

SAYOUTY, ELH

机构：

[1] CNRS,MET PHYS LAB,CNRS,URA 131,40 AVE RECTEUR PINEAU,F-86022 POITIERS,FRANCE

[2] FAC SCI AIN CHOCK 1,CASABLANCA,MOROCCO

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1994年 / 133卷 / 1-3期

关键词：

D O I：

10.1016/0304-8853(94)90598-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mossbauer spectroscopy, X-ray diffraction and transmission electron microscopy are used to study ferromagnetic Fe-Ni-Cr films prepared by ion-beam sputtering. The X-ray diffractograms of deposits reveal the crystalline character of these materials, while transmission electron microscopy determines the nucleation and morphological growth stages. A phase transition takes place at temperatures higher than 750 K. Evidence is found that, during the transition, the ferromagnetic part of the Mossbauer spectra splits up into two components, thus indicating the existence of two iron sites. The index n and activation energy Q in the Johnson-Mehl-Avrami plot are found to be 0.68 and 366 kJ mol-1, respectively.

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页码：470 / 473

页数：4

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