MAGNETIC-INTERACTIONS IN DIFFERENT OXIDATION-STATES OF THIN COBALT FILMS

被引:20
作者
GETZLAFF, M [1 ]
BANSMANN, J [1 ]
SCHONHENSE, G [1 ]
机构
[1] JOHANNES GUTENBERG UNIV,INST PHYS,D-55099 MAINZ,GERMANY
关键词
D O I
10.1016/0304-8853(94)90273-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Investigations concerning the magnetic interactions of oxygen with thin cobalt films evaporated on W(110) were carried out by spin-resolved photoelectron spectroscopy; in particular modifications of surface magnetism depending on the chemical state were determined. The formation of different oxidation states at various substrate temperatures and the coexistence of chemisorbed oxygen and antiferromagnetic CoO near the surface could be impressively demonstrated. The measurements indicate 'magnetically live' adsorbate layers at the surface revealing an induced magnetic moment of the chemisorbed oxygen atoms.
引用
收藏
页码:304 / 310
页数:7
相关论文
共 31 条
[11]   COMPARATIVE-STUDY OF ADSORBATE SYSTEMS AND CORRESPONDING COMPOUNDS USING X-RAY AND UV-PHOTOEMISSION .1. HEXAGONAL(0001)CO-CO,O2 VERSUS OXIDES AND CARBONYLS [J].
FREUND, HJ ;
HOHLNEICHER, G .
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1979, 83 (02) :100-108
[12]   EXCHANGE SPLITTING OF ADSORBATE-INDUCED BANDS ON THIN IRON FILMS [J].
GETZLAFF, M ;
BANSMANN, J ;
WESTPHAL, C ;
SCHONHENSE, G .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1992, 104 :1781-1782
[13]   IODINE ON A MAGNETIZED IRON FILM EVIDENCE FOR A MAGNETIC COUPLING [J].
GETZLAFF, M ;
BANSMANN, J ;
SCHONHENSE, G .
PHYSICS LETTERS A, 1993, 182 (01) :153-156
[14]  
GETZLAFF M, 1993, PHYS REV LETT, V1, P793
[15]  
GETZLAFF M, IN PRESS
[16]  
GETZLAFF M, UNPUB SURF SCI
[17]   BONDING AND MAGNETISM OF CHEMISORBED OXYGEN ON FE(001) [J].
HUANG, H ;
HERMANSON, J .
PHYSICAL REVIEW B, 1985, 32 (10) :6312-6318
[18]  
HUFNER S, 1979, PHOTOEMISSION SOLIDS, V2, pCH3
[19]   THE STRUCTURAL AND CHEMISORPTIVE PROPERTIES OF ULTRATHIN COBALT OVERLAYERS ON W(110) AND W(100) [J].
JOHNSON, BG ;
BERLOWITZ, PJ ;
GOODMAN, DW ;
BARTHOLOMEW, CH .
SURFACE SCIENCE, 1989, 217 (1-2) :13-37
[20]   EXCHANGE-SPLIT ADSORBATE BANDS - THE ROLE OF SUBSTRATE HYBRIDIZATION [J].
JOHNSON, PD ;
CLARKE, A ;
BROOKES, NB ;
HULBERT, SL ;
SINKOVIC, B ;
SMITH, NV .
PHYSICAL REVIEW LETTERS, 1988, 61 (19) :2257-2260