Cu interfaced Fe/Pt multilayer with improved (001) texture, enhanced L10 transformation kinetics and high magnetic anisotropy

被引：5

作者：

Kumar, Shubham ^{[1
,2
]}

Srihari, V. ^{[3
]}

Sharma, Gagan ^{[1
,2
]}

Gupta, Ajay ^{[4
]}

Reddy, V. R. ^{[5
]}

Gupta, Mukul ^{[5
]}

Gome, Anil ^{[5
]}

Sharma, Kavita ^{[1
,2
]}

机构：

[1] Amity Univ UP, Amity Ctr Spintron Mat, Sect 125, Noida 201313, India

[2] Amity Univ UP, Amity Inst Appl Sci, Sect 125, Noida 201313, India

[3] Bhabha Atom Res Ctr, High Pressure & Synchrotron Radiat Phys Div, Mumbai 400085, India

[4] Univ Petr & Energy Studies, Dept Phys, Dehra Dun 248007, India

[5] UGC DAE Consortium Sci Res, Univ Campus,Khandwa Rd, Indore 452001, India

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2023年 / 567卷

关键词：

FePtCu multilayer; L10; ordering; XRR; Magnetic properties; XRD; ORDERING TEMPERATURE; ALLOY-FILMS; THIN-FILMS; FE-PT; PHASE;

D O I：

10.1016/j.jmmm.2022.170327

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present work, enhanced L10 ordering kinetics with improved crystallographic texturing in [001] direction and high magnetic coercivity of about 6 kOe is observed in L10 ordered Fe(1-x)CuxPt films, after successive isochronal vacuum annealing of multilayer structure [(Fe(1-x)/Cux)/Pt]x10. Synchrotron grazing incidence x-ray diffraction (GIXRD) measurements, performed using area detector confirms the onset of L10 ordering at 200 degrees C and presence of high degree of ordering at 300 degrees C. In-plane and out-of-plane GIXRD measurements validates texturing of magnetic easy axis [001] in out of film plane direction. Enormous increase in magnetic coercivity is observed from MOKE measurements in L10 ordered state. Lower ordering temperature with enhance (001) texturing and high magnetic coercivity is desirable for potential device applications of FePt. Effect of Cu and annealing temperature on structural and magnetic properties is investigated systematically in Fe(1-x)CuxPt films. Structural investigation discloses that lattice distortion in L10 ordered state caused by Cu addition and high interfacial energy associated with initial multilayer structure drives faster interdiffusion. Both of these aspects collectively work for FCC to FCT transformation, hence results in enhanced kinetics and texturing effects of L10 FePt.

引用

页数：10

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