Structural and magnetic features of the solid-state synthesis and martensitic transformations in Ni/Fe(001)/MgO(001) thin films

被引：7
|
作者：
Myagkov, V. G. [1 ]
Zhigalov, V. S.
Bykova, L. E.
Bondarenko, G. V.
Bondarenko, G. N.
机构：
[1] SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[2] SB RAS, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 310卷 / 01期
关键词：
thin films; solid-state reactions; invar effect; Fe-Ni alloys; martensitic transformation;
D O I：
10.1016/j.jmmm.2006.07.033
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The results of the experimental study of phase transformations occurring in Ni/Fe(0 0 I)MgO(0 0 1) thin films with 3Fe:1Ni atomic composition during annealing at temperatures up to 650 degrees C and cooling to liquid nitrogen temperature are presented. Comparative analysis of previous and current results suggests that the paramagnetic phase gamma(par) present in the invar of Ni1-xFex alloys is the gamma-Fe3Ni phase with the lattice parameter a = 0.3600 nm. Measurements of magnetization of the samples in dependence of composition allowed one to determine a single-phase region of gamma(par) phase existence in thin films limited by 75 at% Fe. It is shown that the temperature Of gamma(par) phase initiation during the solid-state synthesis coincides with the temperature As of the reverse martensitic alpha' -> gamma(par), transition (A(S) = T-0 similar to 550 degrees C). (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：126 / 130
页数：5
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