MAGNETIC ORDER AT STEPPED FE/CR INTERFACES

被引：17

作者：

MIETHANER, S ^{[1
]}

BAYREUTHER, G ^{[1
]}

机构：

[1] UNIV REGENSBURG,INST ANGEW PHYS,D-93040 REGENSBURG,GERMANY

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1995年 / 148卷 / 1-2期

关键词：

D O I：

10.1016/0304-8853(95)00142-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of surface atomic step density on the magnetic moment of Cr layers on Fe(001) has been studied in situ by Alternating Gradient Magnetometry (AGM). Contrary to previous results on flat surfaces where large Cr moments were observed coupled antiferromagnetically to their Fe nearest neighbours, the sample moment remains essentially unchanged if Cr is deposited on a strongly faceted Fe surface. During addition of a second Fe layer on a 6 ML Cr/Fe(001) film the sample moment stays constant up to an average Fe thickness of 5 ML and increases linearly with the nominal Fe thickness for thicker layers. This behaviour is interpreted as topological antiferromagnetism due to the specific step structure of the surface in agreement with recent tight binding calculations.

引用

页码：42 / 43

页数：2

共 10 条

[1]

DREYSSE H, 1993, JUL P NATO WORKSH BO

[2] PREDICTION OF STRONGLY ENHANCED TWO-DIMENSIONAL FERROMAGNETIC MOMENTS ON METALLIC OVERLAYERS, INTERFACES, AND SUPERLATTICES [J].

FU, CL ;

FREEMAN, AJ ;

OGUCHI, T .

PHYSICAL REVIEW LETTERS, 1985, 54 (25) :2700-2703

[3] ANTIFERROMAGNETIC COUPLING OF A CR OVERLAYER TO FE(100) [J].

HILLEBRECHT, FU ;

ROTH, C ;

JUNGBLUT, R ;

KISKER, E ;

BRINGER, A .

EUROPHYSICS LETTERS, 1992, 19 (08) :711-716

[4] MAGNETIC-STRUCTURE OF FE/CR/FE TRILAYERS [J].

IDZERDA, YU ;

TJENG, LH ;

LIN, HJ ;

MEIGS, G ;

CHEN, CT ;

GUTIERREZ, J .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (10) :6204-6206

[5]

LUGERT G, 1992, MATER RES SOC S P, V232, P97

[6] SURFACE MAGNETISM OF FE(001) [J].

OHNISHI, S ;

FREEMAN, AJ ;

WEINERT, M .

PHYSICAL REVIEW B, 1983, 28 (12) :6741-6748

[7] MAGNETIC-MOMENTS IN ULTRATHIN CR FILMS ON FE(100) [J].

TURTUR, C ;

BAYREUTHER, G .

PHYSICAL REVIEW LETTERS, 1994, 72 (10) :1557-1560

[8] TOPOLOGICAL ANTIFERROMAGNETISM AT CR SURFACES AND INTERFACES [J].

VEGA, A ;

BALBAS, LC ;

CHOUAIRI, A ;

DEMANGEAT, C ;

DREYSSE, H .

PHYSICAL REVIEW B, 1994, 49 (18) :12797-12800

[9]

VEGA A, 1994, EUROPHYS LETT, V27, P165

[10] CALCULATED ELECTRONIC-STRUCTURE OF CHROMIUM SURFACES AND CHROMIUM MONOLAYERS ON IRON [J].

VICTORA, RH ;

FALICOV, LM .

PHYSICAL REVIEW B, 1985, 31 (11) :7335-7343

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