Transition from ferromagnetic to noncollinear to paramagnetic state with increasing Ru concentration in FeRu films

被引：0

作者：

Lisik, Juliana ^{[1
]}

Rojas, Manuel ^{[1
]}

Myrtle, Spencer ^{[1
]}

Ryan, Dominic H. ^{[2
,3
]}

Huebner, Rene ^{[4
]}

Omelchenko, Pavlo ^{[1
]}

Abert, Claas ^{[5
]}

Ducevic, Amil ^{[5
]}

Suess, Dieter ^{[5
]}

Soldatov, Ivan ^{[6
]}

Schaefer, Rudolf ^{[6
]}

Seyd, Johannes ^{[7
]}

Albrecht, Manfred ^{[7
]}

Girt, Erol ^{[1
]}

机构：

[1] Simon Fraser Univ, Dept Phys, 8888 Univ Dr, Burnaby, BC V5A 1S6, Canada

[2] McGill Univ, Phys Dept, 3600 Univ St, Montreal, PQ H3A 2T8, Canada

[3] McGill Univ, Ctr Phys Mat, 3600 Univ St, Montreal, PQ H3A 2T8, Canada

[4] Helmholtz Zentrum Dresden Rossendorf, Inst Ion Beam Phys & Mat Res, Bautzner Landstr 400, D-01328 Dresden, Germany

[5] Univ Vienna, Fac Phys, Phys Funct Mat, Kolingasse 14-16, A-1090 Vienna, Austria

[6] Leibniz Inst Solid State & Mat Res Dresden, Helmholzstr 20, D-01069 Dresden, Germany

[7] Univ Augsburg, Inst Phys, Univ Str 1, D-86159 Augsburg, Germany

来源：

PHYSICAL REVIEW B | 2024年 / 110卷 / 10期

基金：

加拿大自然科学与工程研究理事会; 奥地利科学基金会;

关键词：

MOSSBAUER; IRON; RUTHENIUM; ANTIFERROMAGNETISM;

D O I：

10.1103/PhysRevB.110.104429

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structural and magnetic properties of sputter-deposited Fe100-xRux films were studied for x <= 50. The crystal structure of Fe100-x Ru-x is shown to be predominantly body-centered cubic for x<13 and to undergo a gradual transition to hexagonal close-packed in the Ru concentration range 13<x <20. Magnetic measurements indicate that the addition of Ru to Fe gives rise to a noncollinear magnetic alignment between Fe atoms in the body-centered cubic FeRu alloys, while the hexagonal close-packed FeRu alloys exhibit paramagnetic behavior. A simple atomistic model was used to show that the competition between ferromagnetic coupling of neighboring Fe atoms and antiferromagnetic coupling of Fe atoms across Ru atoms in cubic FeRu structures can induce noncollinear magnetic order. Magnetic multilayer structures used in thin-film magnetic devices make extensive use of both Fe and Ru layers. Our results reveal that the presence of even a small amount of Ru in Fe influences the magnetic order of Fe, which could impact the performance of these devices.

引用

页数：14

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