Proximity effects on dimensionality and magnetic ordering in Pd/Fe/Pd trialyers

被引：32

作者：

Hase, Thomas P. A. ^{[1
]}

Brewer, Matthew S. ^{[1
]}

Arnalds, Unnar B. ^{[2
]}

Ahlberg, Martina ^{[2
]}

Kapaklis, Vassilios ^{[2
]}

Bjoerck, Matts ^{[2
]}

Bouchenoire, Laurence ^{[3
,4
]}

Thompson, Paul ^{[3
,4
]}

Haskel, Daniel ^{[5
]}

Choi, Yongseong ^{[5
]}

Lang, Jonathan ^{[5
]}

Sanchez-Hanke, Cecilia ^{[6
]}

Hjoervarsson, Bjoergvin ^{[2
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[2] Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden

[3] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England

[4] European Synchrotron Radiat Facil, XMaS Beamline, F-38043 Grenoble, France

[5] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[6] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW B | 2014年 / 90卷 / 10期

基金：

瑞典研究理事会; 英国工程与自然科学研究理事会;

关键词：

ULTRATHIN FILMS; FE/PD(100); ALLOYS; PHOTOEMISSION; TRANSITION; MORPHOLOGY; PALLADIUM; BEHAVIOR; CU(111); IRON;

D O I：

10.1103/PhysRevB.90.104403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The element-specific magnetization and ordering in trilayers consisting of 0.3-1.4 monolayer (ML) thick Fe layers embedded in Pd(001) has been determined using x-ray resonant magnetic scattering. The proximity to Fe induces a large moment in the Pd which extends similar to 2 nm from the interfaces. The magnetization as a function of temperature is found to differ significantly for the Fe and Pd sublattices: The Pd signal resembles the results obtained by magneto-optical techniques with an apparent three-dimensional (3D) to two-dimensional (2D) transition in spatial dimensionality for Fe thickness below similar to 1 ML. In stark contrast, the Fe data exhibits a 2D behavior. No ferromagnetic signal is obtained from Fe below the 2D percolation limit in Fe coverage (similar to 0.7 ML), while Pd shows a ferromagnetic response for all samples. The results are attributed to the temperature dependence of the susceptibility of Pd and a profound local anisotropy of submonolayered Fe.

引用

页数：6

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