Magnetization reversal behavior in Cobalt Rare-Earth thin films

被引：22

作者：

Malhotra, SS ^{[1
]}

Shan, ZS ^{[1
]}

Stafford, DC ^{[1
]}

Liou, SH ^{[1
]}

Sellmyer, DJ ^{[1
]}

机构：

[1] UNIV NEBRASKA,CTR MAT RES & ANAL,LINCOLN,NE 68588

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1996年 / 32卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1109/20.539251

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：

Cobalt Rare-Earth (CoR, R = Pr,Sm) thin films on a Cr underlayer have shown promise as future ultra high density magnetic recording media. The activation volume or the magnetic switching volume (V*) is an important consideration for thermal stability and media noise in high density recording media and V* can also provide information about the magnetization reversal behavior in these films. The magnetic switching volume was estimated for the CoPr films with thicknesses from 28 to 639 nm with a Cr underlayer of 80 nm annealed at 500 degrees C. The measured switching volume ranges from 1.3 to 1.7x10(-18) cm(3). We have also studied the Cr underlayer thickness and temperature effects on the switching volume for the CoSm films.

引用

收藏

页码：4019 / 4021

页数：3

相关论文

共 13 条

[1] HYSTERESIS PROPERTIES OF ULTRATHIN FERROMAGNETIC-FILMS [J].

BRUNO, P ;

BAYREUTHER, G ;

BEAUVILLAIN, P ;

CHAPPERT, C ;

LUGERT, G ;

RENARD, D ;

RENARD, JP ;

SEIDEN, J .

JOURNAL OF APPLIED PHYSICS, 1990, 68 (11) :5759-5766

[2] EXPERIMENTAL APPROACH TO COERCIVITY ANALYSIS IN HARD MAGNETIC-MATERIALS [J].

GIVORD, D ;

LU, Q ;

ROSSIGNOL, MF ;

TENAUD, P ;

VIADIEU, T .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1990, 83 (1-3) :183-188

[3] NANOSTRUCTURE OF SM-CO ON CR THIN-FILMS [J].

LIU, Y ;

ROBERTSON, BW ;

SHAN, ZS ;

MALHOTRA, S ;

YU, MJ ;

RENUKUNTA, SK ;

LIOU, SH ;

SELLMYER, DJ .

IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (06) :4035-4037

[4] MAGNETIC VISCOSITY IN HIGH-DENSITY RECORDING [J].

LU, PL ;

CHARAP, SH .

JOURNAL OF APPLIED PHYSICS, 1994, 75 (10) :5768-5770

[5]

MALHOTRA SS, IN PRESS APPL PHYS

[6] MAGNETIC-PROPERTIES AND MICROSTRUCTURE OF SPUTTERED COSM/X (X=TI,V,CU AND CR) THIN-FILMS [J].

OKUMURA, Y ;

FUJIMORI, H ;

SUZUKI, O ;

HOSOYA, N ;

YANG, XB ;

MORITA, H .

IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (06) :4038-4040

[7] MAGNETIC AND STRUCTURAL-PROPERTIES OF HIGH COERCIVITY NANOCRYSTALLINE COSM FILMS WITH INPLANE ANISOTROPY [J].

SELLMYER, DJ ;

SHAN, ZS ;

LIU, Y ;

LIOU, SH ;

MALHOTRA, SS ;

ROBERTSON, BW .

SCRIPTA METALLURGICA ET MATERIALIA, 1995, 33 (10-11) :1545-1552

[8] TIME-DEPENDENT MAGNETIC PHENOMENA AND PARTICLE-SIZE EFFECTS IN RECORDING MEDIA [J].

SHARROCK, MP .

IEEE TRANSACTIONS ON MAGNETICS, 1990, 26 (01) :193-197

[9] MAGNETIC SWITCHING VOLUMES OF COSM THIN-FILMS FOR HIGH-DENSITY LONGITUDINAL RECORDING [J].

SINGLETON, EW ;

SHAN, ZS ;

JEONG, YS ;

SELLMYER, DJ .

IEEE TRANSACTIONS ON MAGNETICS, 1995, 31 (06) :2743-2745

[10] A STUDY OF MAGNETIC VISCOSITY [J].

STREET, R ;

WOOLLEY, JC .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION A, 1949, 62 (357) :562-572