J.X.Zhang1)
,
K. Tamarat2) and B. Dubois2) 1) Schoolof Material Science & Engineering
,
Hebei University of Technology
,
Tianjin 300130
,
China2) ISMCM LISSMA
,
St.Ouen 93407
,
France
金属学报(英文版)
Thethermal induced γ εmartensitic transformation in a Fe 31 6 Mn 6 5 Si ( wt% ) alloy wasstudied by meansof X ray diffraction throughtwothermalcyclesin the83 480 Ktem perature range.Itisshownthatduringcoolingtheγ→εtransformationterminatesnotat TγNbutatalowertemperatureandtheγphaseexhibitsstrongstabilityevencoolingto83 K;like wise,εmartensiteis noticeably stable even heating up to 480 K. Atthe temperature about 275 K, an anomalousdecreaseintheintensityofthe(200)γreflections wasobserved on heat ing, whereasthe(101)εreflectionsshow ageneralvariationinintensity.Itisconsideredthat theabnormalphenomenonis probably related tothe magnetictransition of the γphase fromantiferromagnetism to paramagnetism .
关键词:
Fe Mn
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J.P.Renard Institut d'Electronique Fondamentale
,
Batiment 220
,
CNRS URA 22
,
Université Paris-Sud
,
91405
,
Orsay-Cedex
,
France
材料科学技术（英文）
Magnetic multilayers are artificially structured materials made of ultrathin films of two different mate- rials,alternately ferromagnetic and non-ferromagnetic.They exhibit new magnetic properties differ- ent from those of bulk materials.We review the magnetic properties of metallic magnetic multilayers and focus on interface magnetic anisotropy,giant magnetoresistance and interlayer couplings,which are of great promise for applications to high density magnetic storage.
关键词:
magnetic multilayer
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