In-plane anisotropy in arrays of magnetic ellipses

被引:20
作者
Hao, Y [1 ]
Walsh, M
Farhoud, M
Ross, CA
Smith, HI
Wang, JQ
Malkinski, L
机构
[1] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA
[2] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
[3] Univ New Orleans, Coll Sci, AMRI, New Orleans, LA 70148 USA
基金
美国国家科学基金会;
关键词
magnetization reversal; nanomagnets; shape anisotropy; thermal effect;
D O I
10.1109/20.908653
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Large area samples of submicron arrays of elliptical thin Co dots were fabricated using interference lithography and ion milling. The magnetic properties were investigated by MFM and hysteresis loops were measured at different temperatures. The temperature dependence of coercivity was measured suggests that the thermal fluctuation plays an important role in the magnetization reversal mechanism.
引用
收藏
页码:2996 / 2998
页数:3
相关论文
共 14 条
[1]   Property variation with shape in magnetic nanoelements [J].
Cowburn, RP .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2000, 33 (01) :R1-R16
[2]   Thickness dependent binary behavior of elongated single-domain cobalt nanostructures [J].
Evoy, S ;
Carr, DW ;
Sekaric, L ;
Suzuki, Y ;
Parpia, JM ;
Craighead, HG .
JOURNAL OF APPLIED PHYSICS, 2000, 87 (01) :404-409
[3]   Fabrication of large area nanostructured magnets by interferometric lithography [J].
Farhoud, M ;
Hwang, M ;
Smith, HI ;
Schattenburg, ML ;
Bae, JM ;
Youcef-Toumi, K ;
Ross, CA .
IEEE TRANSACTIONS ON MAGNETICS, 1998, 34 (04) :1087-1089
[4]   Magnetic domain structure and magnetization reversal in submicron-scale Co dots [J].
Fernandez, A ;
Gibbons, MR ;
Wall, MA ;
Cerjan, CJ .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 190 (1-2) :71-80
[5]   The effect of end and edge shape on the performance of pseudo-spin valve memories [J].
Gadbois, J ;
Zhu, JG ;
Vavra, W ;
Hurst, A .
IEEE TRANSACTIONS ON MAGNETICS, 1998, 34 (04) :1066-1068
[6]   Size and shape effects of patterned polycrystalline islands [J].
He, LN ;
Wang, FZ ;
Mapps, DJ ;
Clegg, WW ;
Wilton, DT ;
Robinson, P .
IEEE TRANSACTIONS ON MAGNETICS, 1999, 35 (05) :3508-3510
[7]  
HWANG M, IN PRESS IEEE T MAGN
[8]   Switching of nanoscale magnetic elements [J].
Kirk, KJ ;
Chapman, JN ;
McVitie, S ;
Aitchison, PR ;
Wilkinson, CDW .
APPLIED PHYSICS LETTERS, 1999, 75 (23) :3683-3685
[9]   PHYSICAL AND MAGNETIC-PROPERTIES OF SUBMICRON LITHOGRAPHICALLY PATTERNED MAGNETIC ISLANDS [J].
NEW, RMH ;
PEASE, RFW ;
WHITE, RL .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1995, 13 (03) :1089-1094
[10]   DEMAGNETIZING FACTORS OF THE GENERAL ELLIPSOID [J].
OSBORN, JA .
PHYSICAL REVIEW, 1945, 67 (11-1) :351-357