Interface magnetism using radioactive atoms

被引：8

作者：

Bertschat, HH ^{[1
]}

机构：

[1] Hahn Meitner Inst Kernforsch Berlin GmbH, Bereich Festkorperphys, D-14109 Berlin, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1999年 / 198-99卷

关键词：

magnetic interfaces; induced magnetic moments; nuclear methods; PAC;

D O I：

10.1016/S0304-8853(98)01100-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

With the use of radioactive probe atoms it is possible to trace - with monolayer resolution - magnetic properties through a multilayer system by the measurement of magnetic hyperfine interactions. In a first series of experiments we investigated the Ni/Pd interface, starting with the surfaces of Ni and Pd single crystals using the chalcogen probe (77)Se as an isolated adatom. The magnetic hyperfine fields on Ni surfaces were found to deviate considerably from the bulk value. Furthermore we investigated the induced magnetization in Pd using the 4d-transition element (100)Pd and the sp-element (111)Cd as radioactive probes. When ultrathin Pd was in contact with Ni, stable magnetic hyperfine fields were detected indicating the Formation of stable magnetic moments in Pd. In thick Pd (single crystal) magnetic moments were induced up to at least 7 atomic layers away from the interface and these moments were fluctuating. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：636 / 640

页数：5

共 13 条

[1] New approach for range measurements of induced magnetic interactions in Pd [J].

Bertschat, HH ;

Granzer, H ;

Haas, H ;

Kowallik, R ;

Seeger, S ;

Zeitz, WD .

PHYSICAL REVIEW LETTERS, 1997, 78 (02) :342-345

[2] Static magnetic hyperfine fields in magnetically polarized Pd [J].

Bertschat, HH ;

Blaschek, HH ;

Granzer, H ;

Potzger, K ;

Seeger, S ;

Zeitz, WD ;

Niehus, H ;

Burchard, A ;

Forkel-Wirth, D .

PHYSICAL REVIEW LETTERS, 1998, 80 (12) :2721-2724

[3] ABINITIO CALCULATIONS FOR IMPURITIES IN CU AND NI [J].

DEDERICHS, PH ;

ZELLER, R ;

AKAI, H ;

BLUGEL, S ;

OSWALD, A .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1985, 51 (02) :137-150

[4] GREENS-FUNCTION CALCULATIONS OF THE HYPERFINE INTERACTION FOR IMPURITIES IN METALS AND FOR METALLIC INTERFACES [J].

DEDERICHS, PH ;

LANG, P ;

WILLENBORG, K ;

ZELLER, R ;

PAPANIKOLAOU, N ;

STEFANOU, N .

HYPERFINE INTERACTIONS, 1993, 78 (1-4) :341-359

[5] MAGNETIZATION OF PD(111) FILMS BY CONTACT WITH FERROMAGNETIC NI(111) FILMS [J].

GRADMANN, U ;

BERGHOLZ, R .

PHYSICAL REVIEW LETTERS, 1984, 52 (09) :771-774

[6] Magnetic hyperfine fields at Se adatoms on Ni surfaces [J].

Granzer, H ;

Bertschat, HH ;

Haas, H ;

Zeitz, WD ;

Lohmuller, J ;

Schatz, G .

PHYSICAL REVIEW LETTERS, 1996, 77 (20) :4261-4264

[7]

HEINRICH B, 1994, ULTRATHIN MAGNETIC S, pCH5

[8] ADSORPTION SITES AND DIFFUSION STEPS OF IN AND CD ON PD(111) SURFACES [J].

HUNGER, E ;

HAAS, H .

SURFACE SCIENCE, 1990, 234 (03) :273-286

[9] HYPERFINE FIELDS AND SPIN-LATTICE RELAXATION OF IMPURITY NUCLEI IN FERROMAGNETIC TRANSITION-METALS [J].

KANAMORI, J ;

YOSHIDA, HK ;

TERAKURA, K .

HYPERFINE INTERACTIONS, 1981, 9 (1-4) :363-378

[10]

Lindgren B, 1996, HYPERFINE INTERACT C, P613

← 1 2 →