Magnetization reversal and magnetic anisotropy in Co network nanostructures

被引：14

作者：

Lee, WY ^{[1
]}

Leung, HT ^{[1
]}

Zhang, W ^{[1
]}

Xu, YB ^{[1
]}

Hirohata, A ^{[1
]}

Yao, CC ^{[1
]}

Choi, BC ^{[1
]}

Hasko, DG ^{[1
]}

Bland, JAC ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1999年 / 35卷 / 05期

关键词：

coercivity; magnetic anisotropy; network structures;

D O I：

10.1109/20.800562

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：

The magnetization reversal and magnetic anisotropy in Co network structures have been studied using magneto-optic Kerr effect (MOKE). An enhancement of the coercivity is observed in the network structures and is attributed to the pinning of domain walls by the hole edges in the vicinity of which the demagnetizing field spatially varies. We find that the magnetization reversal process is dominated by the intrinsic unaxial anisotropy (2K(u)/M(s)approximate to 200 Oe) in spite of the shape anisotropy induced by the hole edges. The influence of the cross-junction on the competition between the intrinsic uniaxial anisotropy and the induced shape anisotropy is discussed using micromagnetic simulations.

引用

页码：3475 / 3477

页数：3

共 11 条

[1] Magnetic properties of arrays of ''holes'' in Ni80Fe20 films [J].

Adeyeye, AO ;

Bland, JAC ;

Daboo, C .

APPLIED PHYSICS LETTERS, 1997, 70 (23) :3164-3166

[2] High coercivity nanostructured networks [J].

Barnard, JA ;

Butera, A ;

Fujiwara, H ;

Inturi, VR ;

Jarratt, JD ;

Klemmer, TJ ;

Scharr, TW ;

Weston, JL .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :5467-5469

[3] THE MAGNETORESISTANCE OF SUBMICRON FE WIRES [J].

BLUNDELL, SJ ;

SHEARWOOD, C ;

GESTER, M ;

BAIRD, MJ ;

BLAND, JAC ;

AHMED, H .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1994, 135 (01) :L17-L22

[4] Magnetic domain formation in lithographically defined antidot Permalloy arrays [J].

Cowburn, RP ;

Adeyeye, AO ;

Bland, JAC .

APPLIED PHYSICS LETTERS, 1997, 70 (17) :2309-2311

[5] Reversal mechanism of submicron patterned CoNi/Pt multilayers [J].

Haast, MAM ;

Schuurhuis, JR ;

Abelmann, L ;

Lodder, JC ;

Popma, TJ .

IEEE TRANSACTIONS ON MAGNETICS, 1998, 34 (04) :1006-1008

[6] *ZUR THEORIE DER KOERZITIVKRAFT [J].

KERSTEN, M .

ZEITSCHRIFT FUR PHYSIK, 1948, 124 (7-12) :714-741

[7]

LEE WY, UNPUB DYNAMIC HYSTER

[8] Magnetic and magneto-transport properties of novel nanostructured networks [J].

Liu, K ;

Chien, CL .

IEEE TRANSACTIONS ON MAGNETICS, 1998, 34 (04) :1021-1023

[9] Magnetization reversal dynamics in ultrathin magnetic layers [J].

Raquet, B ;

Mamy, R ;

Ousset, JC .

PHYSICAL REVIEW B, 1996, 54 (06) :4128-4136

[10] HYSTERESIS OF SUB-MICRON PERMALLOY PARTICULATE ARRAYS [J].

SMYTH, JF ;

SCHULTZ, S ;

KERN, D ;

SCHMID, H ;

YEE, D .

JOURNAL OF APPLIED PHYSICS, 1988, 63 (08) :4237-4239

← 1 2 →