Thickness-dependent magnetic properties of Ni81Fe19, Co90Fe10 and Ni65Fe15Co20 thin films

被引:57
作者
Ingvarsson, S
Xiao, G
Parkin, SSP
Gallagher, WJ
机构
[1] IBM Corp, Div Res, TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA
[2] Brown Univ, Dept Phys, Providence, RI 02912 USA
[3] IBM Corp, Almaden Res Ctr, Div Res, San Jose, CA 95120 USA
关键词
magnetic thin films; magnetization; coercivity; anisotropy; magnetoelectronic devices;
D O I
10.1016/S0304-8853(02)00577-2
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We present results of magnetization and magnetic anisotropy measurements in thin magnetic films of the alloys Ni81Fe19, Co90Fe10 and Ni65Fe15Co20 that are commonly used in magnetoelectronic devices. The films were sandwiched between layers of Ta. At room temperature the critical thickness for all the films to become ferromagnetic is in the range 11-13 Angstrom. In Co90Fe10 the coercivity and the anisotropy field both depend strongly on layer thickness. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:202 / 206
页数:5
相关论文
共 12 条
[1]  
Bozorth R.M., 1978, Ferromagnetism
[2]  
GALTIER P, 1994, MATER RES SOC SYMP P, V343, P417, DOI 10.1557/PROC-343-417
[3]   Effect of interface roughness on hysteresis loops of ultrathin Co films from 2 to 30 ML on Cu(001) surfaces [J].
Jiang, Q ;
Yang, HN ;
Wang, GC .
SURFACE SCIENCE, 1997, 373 (2-3) :181-194
[4]   The effect of Ta on the magnetic thickness of permalloy (Ni81Fe19) films [J].
Kowalewski, M ;
Butler, WH ;
Moghadam, N ;
Stocks, GM ;
Schulthess, TC ;
Song, KJ ;
Thompson, JR ;
Arrott, AS ;
Zhu, T ;
Drewes, J ;
Katti, RR ;
McClure, MT ;
Escorcia, O .
JOURNAL OF APPLIED PHYSICS, 2000, 87 (09) :5732-5734
[5]   Effect of surface roughness on magnetization reversal of Co films on plasma-etched Si(100) substrates [J].
Li, M ;
Zhao, YP ;
Wang, GC ;
Min, HG .
JOURNAL OF APPLIED PHYSICS, 1998, 83 (11) :6287-6289
[6]   STRUCTURE AND MAGNETIC-PROPERTIES OF ETCHED NIFECO FILMS [J].
MALYUTIN, VI ;
OSUKHOVSKII, VE ;
VOROBIEV, YD ;
SHISHKOV, AG ;
YUDIN, VV .
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1981, 65 (01) :45-52
[7]   SPIN-POLARIZED ELECTRON-TUNNELING [J].
MESERVEY, R ;
TEDROW, PM .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1994, 238 (04) :173-243
[8]   Effects of Ta on the magnetic structure of permalloy [J].
Moghadam, NY ;
Stocks, GM ;
Kowalewski, M ;
Butler, WH .
JOURNAL OF APPLIED PHYSICS, 2001, 89 (11) :6886-6888
[9]   Interface magnetism and spin wave scattering in ferromagnet-insulator-ferromagnet tunnel junctions [J].
Moodera, JS ;
Nowak, J ;
van de Veerdonk, RJM .
PHYSICAL REVIEW LETTERS, 1998, 80 (13) :2941-2944
[10]   Surface roughness and composition effects on the magnetic properties of electrodeposited Ni-Co alloys [J].
Villain, S ;
Ebothe, J ;
Troyon, M .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1996, 157 :274-275