Superparamagnetic magnetic force microscopy tips

被引:27
作者
Hopkins, PF
Moreland, J
Malhotra, SS
Liou, SH
机构
[1] NATL INST STAND & TECHNOL,BOULDER,CO 80303
[2] UNIV NEBRASKA,DEPT PHYS & ASTRON,LINCOLN,NE 68588
关键词
D O I
10.1063/1.361969
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report on magnetic force microscopy (MFM) images of a thin-film magnetic recording head taken using batch micromachined silicon tips coated with nanocomposite Fe-60(SiO2)(40) and Fe-70(SiO2)(30) films. The small Fe grain size (<10 nm) and dilute Fe volume fraction (0.29-0.4) of these granular films produce tip coatings of low remanence and essentially zero coercivity, reduced by the superparamagnetic properties of these films. We have used these tips to obtain MFM images of the write field of the head with high spatial and magnetic-field resolution. In comparison to images taken using commercial Co85Cr15-coated tips, these MFM images show reduced tip memory effects and clearly delineate the gap field from the pole pieces. (C) 1996 American Institute of Physics.
引用
收藏
页码:6448 / 6450
页数:3
相关论文
共 11 条
[1]  
BABCOCK K, 1995, MATER RES SOC SYMP P, V355, P311
[2]   OPTIMIZATION OF THIN-FILM TIPS FOR MAGNETIC FORCE MICROSCOPY [J].
BABCOCK, K ;
ELINGS, V ;
DUGAS, M ;
LOPER, S .
IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (06) :4503-4505
[3]   MAGNETIC ANTIGRANULOCYTES FE-(SIO2) SOLIDS [J].
CHIEN, CL ;
GANG, X ;
LIOU, SH ;
TAYLOR, JN ;
LEVY, A .
JOURNAL OF APPLIED PHYSICS, 1987, 61 (08) :3311-3313
[4]  
ELINGS V, 1994, Patent No. 5308974
[5]  
ELINGS VB, 1993, Patent No. 5266801
[6]  
GRUTTER P, 1990, APPL PHYS LETT, V57, P1820, DOI 10.1063/1.104030
[7]  
GRUTTER P, 1992, SCANNING TUNNELING M, V2, P151
[8]   EXPERIMENTAL INVESTIGATION OF FE-(SIO2) ANTIGRANULOCYTES FILMS [J].
KANAI, Y ;
CHARAP, SH .
JOURNAL OF APPLIED PHYSICS, 1991, 69 (08) :4478-4480
[9]   PARTICLE-SIZE DEPENDENCE OF THE MAGNETIC-PROPERTIES OF ULTRAFINE GRANULAR FILMS [J].
LIOU, SH ;
CHIEN, CL .
JOURNAL OF APPLIED PHYSICS, 1988, 63 (08) :4240-4242
[10]   THICKNESS DEPENDENCE OF THE MAGNETIC AND ELECTRICAL-PROPERTIES OF FE-SIO2 NANOCOMPOSITE FILMS [J].
MALHOTRA, SS ;
LIU, Y ;
SHEN, JX ;
LIEU, SH ;
SELLMYER, DJ .
JOURNAL OF APPLIED PHYSICS, 1994, 76 (10) :6304-6306