On defects' role in enhanced perpendicular magnetic anisotropy in Pt/Co/Pt, induced by ion irradiation

被引：10

作者：

Jakubowski, M. M. ^{[1
]}

Liedke, M. O. ^{[2
]}

Butterling, M. ^{[2
]}

Dynowska, E. ^{[1
]}

Sveklo, I ^{[3
]}

Milinska, E. ^{[1
]}

Kurant, Z. ^{[3
]}

Boettger, R. ^{[4
]}

von Borany, J. ^{[4
]}

Maziewski, A. ^{[3
]}

Wagner, A. ^{[2
]}

Wawro, A. ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Phys, Warsaw, Poland

[2] Helmholtz Zentrum Dresden Rossendorf, Inst Radiat Phys, Dresden, Germany

[3] Univ Bialystok, Fac Phys, Bialystok, Poland

[4] Helmholtz Zentrum Dresden Rossendorf, Inst Ion Beam Phys & Mat Res, Dresden, Germany

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2019年 / 31卷 / 18期

关键词：

vacancy formation; Rutherford backscattering; RBS; positron spectroscopy; Ion irradiation; magnetic thin films; lattice strains; perpendicular magnetic anisotropy; PMA; INDUCED PHASE-TRANSITION; SLOW POSITRON BEAM; CO/PT MULTILAYERS; MAGNETOCRYSTALLINE ANISOTROPY; GALLIUM IRRADIATION; THIN-FILMS; CO; SIMULATION; SIMNRA;

D O I：

10.1088/1361-648X/ab0351

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Modifications of magnetic and magneto-optical properties of Pt/Co(d(co))/Pt upon Ar+ irradiation (with energy 1.2, 5 and 30keV) and fluence, F at the range from 2 . 10(13)-2 . 10(16) Ar+ cm(-2)) were studied. Two 'branches' of increased perpendicular magnetic anisotropy (PMA) and enhanced magneto-optical response are found on 2D (d(co), F) diagrams. The difference in F between 'branches' is driven by ion energy. Structural features correlated with magnetic properties have been analysed thoroughly by x-ray diffraction, Rutherford backscattering spectrometry and positron annihilation spectroscopy. Experimental results are in agreement with TRIDYN numerical calculations of irradiation-induced layers intermixing. Our work discusses particularly structural factors related to crystal lattice defects and strain, created and modified by irradiation, co-responsible for the increase in the PMA.

引用

页数：13

共 66 条

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