Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin films

被引：3

作者：

Roman, A. ^{[1
]}

Pedroso, A. Lopez ^{[1
]}

Bouzehouane, K. ^{[2
]}

Gomez, J. E. ^{[3
,4
,5
]}

Butera, A. ^{[3
,4
,5
]}

Aguirre, M. H. ^{[6
,7
,8
]}

Soares, M. Medeiros ^{[9
,10
]}

Garcia, C. ^{[11
,12
]}

Steren, L. B. ^{[1
]}

机构：

[1] Consejo Nacl Invest Cient & Tecn, Nodo Constituyentes, Inst Nanociencia & Nanotecnol CNEA, Av Gral Paz 1499, RA-1650 San Martin, Pcia De Buenos, Argentina

[2] Univ Paris Saclay, CNRS, Thales, Unite Mixte Phys, F-91767 Palaiseau, France

[3] Consejo Nacl Invest Cient & Tecn, CNEA, Inst Nanociencia & Nanotecnol, Nodo Bariloche, Av Bustillo 9500, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[4] Univ Nacl Cuyo, Ctr Atom Bariloche, Lab Resonancias Magnet, Gerencia Fis GF,CNEA, Av Bustillo 9500, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[5] Univ Nacl Cuyo, Inst Balseiro, Av Bustillo 9500, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[6] Univ Zaragoza, CSIC, INMA, Inst Nanociencia & Mat Aragon, E-50018 Zaragoza, Spain

[7] Univ Zaragoza, Dept Fis Mat Condensada, E-50009 Zaragoza, Spain

[8] Univ Zaragoza, Lab Microscopias Avanzadas, E-50018 Zaragoza, Spain

[9] Ctr Nacl Pesquisa Energia & Mat CNPEM, Lab Nacl Luz Sincrotron LNLS, BR-13083970 Campinas, SP, Brazil

[10] Univ Fed Paraiba, Dept Fis, BR-58051900 Joao Pessoa, Brazil

[11] Univ Tecn Federico Santa Maria, Dept Fis, Av Espana 1680, Valparaiso, Chile

[12] Univ Tecn Federico Santa Maria, Ctr Cient Tecnol Valparaiso CCTVal, Av Espana 1680, Valparaiso, Chile

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2023年 / 56卷 / 39期

关键词：

magnetic films; magnetic anisotropy; magnetic domains; TEMPERATURE-DEPENDENCE; ANGULAR-DEPENDENCE; SWITCHING FIELD; STRIPE DOMAINS; HYSTERESIS; FORCE;

D O I：

10.1088/1361-6463/acdd0e

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The competition between shape and perpendicular magnetic anisotropies in magnetic thin films gives rise to unusual magnetic behaviors. In ferromagnetic thin films, the presence of an out-of-plane component of the magnetic anisotropy may induce a transition from planar to stripe-like magnetic domains above a critical thickness, tc. In this article, we present a detailed study of the magnetization switching mechanism in FePt thin films, where this phenomenon is observed. Using micromagnetic simulations and experiments, we found that below tc the reversal mechanism is well described by the two-phase model while above this thickness the magnetization within each stripe reverses by coherent rotation. We also analyzed the out-of-plane component of the magnetic anisotropy and its temperature dependence, probing that substrate-induced strains are responsible for the abnormal coercive field behavior observed for FePt films with t > t(c).

引用

页数：13

共 61 条

[1] Tunable stress induced magnetic domain configuration in FePt thin films [J].