CREATION OF BULK, SUPERLATTICE-LIKE STRUCTURE AND GIANT MAGNETORESISTANCE EFFECT IN A DEFORMED CU-NI-FE ALLOY

被引:20
作者
CHEN, LH
JIN, S
TIEFEL, TH
RAMESH, R
机构
[1] AT&T BELL LABS,MURRAY HILL,NJ 07974
[2] BELLCORE,RED BANK,NJ 07701
关键词
D O I
10.1063/1.110963
中图分类号
O59 [应用物理学];
学科分类号
摘要
A spinodally decomposed Cu-20 Ni-20 Fe alloy containing approximately 500 angstrom size ferromagnetic particles was uniaxially deformed to create a locally multilayered, superlatticelike structure with alternating ferromagnetic and nonmagnetic layers. When the size scale of each layer was made to be small, approximately 15 A thick, a dramatic improvement in room-temperature magnetoresistance ratio from approximately 0.6 to approximately 5% was obtained. An abnormal temperature, dependence of magnetoresistance ratio, i.e., the room-temperature value being greater than that at 4.2 K, was found. The observed giant magnetoresistance behavior could be explained in terms of the field-induced decrease in electron scattering in a nearly superparamagnetic material although the spin-dependent scattering at the two-phase interface and in the ferromagnetic phase may also be a contributing factor.
引用
收藏
页码:1039 / 1041
页数:3
相关论文
共 15 条
[1]   GIANT MAGNETORESISTANCE OF (001)FE/(001) CR MAGNETIC SUPERLATTICES [J].
BAIBICH, MN ;
BROTO, JM ;
FERT, A ;
VANDAU, FN ;
PETROFF, F ;
EITENNE, P ;
CREUZET, G ;
FRIEDERICH, A ;
CHAZELAS, J .
PHYSICAL REVIEW LETTERS, 1988, 61 (21) :2472-2475
[2]  
BERKOWITZ AE, 1992, PHYS REV LETT, V68, P3744
[3]  
Bozorth R. M., 1951, FERROMAGNETISM, P402
[4]   STRUCTURE AND PROPERTIES OF SPINODALLY DECOMPOSED CU-NI-FE ALLOYS [J].
BUTLER, EP ;
THOMAS, G .
ACTA METALLURGICA, 1970, 18 (03) :347-&
[5]  
CHEN L, IN PRESS PHYS REV B
[6]   ENHANCED GIANT MAGNETORESISTANCE IN FE/CR MULTILAYER FILMS BY CR ALLOYING OF THE FE LAYERS [J].
CHEN, LH ;
TIEFEL, TH ;
JIN, S ;
VANDOVER, RB ;
GYORGY, EM ;
FLEMING, RM .
APPLIED PHYSICS LETTERS, 1993, 63 (09) :1279-1281
[7]  
CULLITY BD, 1972, INTRO MAGNETIC MATER, P556
[8]   GIANT MAGNETORESISTANCE OF MAGNETICALLY SOFT SANDWICHES - DEPENDENCE ON TEMPERATURE AND ON LAYER THICKNESSES [J].
DIENY, B ;
HUMBERT, P ;
SPERIOSU, VS ;
METIN, S ;
GURNEY, BA ;
BAUMGART, P ;
LEFAKIS, H .
PHYSICAL REVIEW B, 1992, 45 (02) :806-813
[9]  
DIENY B, IN PRESS J MAG MAGN
[10]  
EVETTS J, 1992, CONCISE ENCY MAGNETI, P287