MnxPt1-x: A new exchange bias material for Permalloy

被引：83

作者：

Farrow, RFC ^{[1
]}

Marks, RF ^{[1
]}

Gider, S ^{[1
]}

Marley, AC ^{[1
]}

Parkin, SSP ^{[1
]}

Mauri, D ^{[1
]}

机构：

[1] IBM CORP,SAN JOSE,CA 95193

来源：

JOURNAL OF APPLIED PHYSICS | 1997年 / 81卷 / 08期

关键词：

D O I：

10.1063/1.364961

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report exchange biasing of Permalloy in as-grown MnxPt1-x/Permalloy structures grown by coevaporation in ultra-high vacuum. Polycrystalline and epitaxial structures with x between 0.35 and 0.75 were studied. X-ray diffraction confirms the presence of chemical ordering in the MnxPt1-x films (grown at 200 degrees C) in as-grown polycrystalline and epitaxial structures. An interfacial coupling energy of 0.032 erg/cm(2) is found for structures where the MnxPt1-x (x = 0.56) is grown at 200 degrees C onto epitaxial Permalloy (001). Polycrystalline structures have a smaller (0.027 erg/cm(2)) interfacial coupling energy. No exchange bias is observed for films with x less than or similar to 0.4. The blocking temperature, for a sample with x = 0.56, is >500 K. (C) 1997 American Institute of Physics.

引用

页码：4986 / 4988

页数：3

共 8 条

[1] EQUIATOMIC TRANSITION METAL ALLOYS OF MANGANESE .4. A NEUTRON DIFFRACTION STUDY OF MAGNETIC ORDERING IN PTMN PHASE [J].

ANDRESEN, AF ;

KJEKSHUS, A ;

MOLLERUD, R ;

PEARSON, WB .

PHILOSOPHICAL MAGAZINE, 1965, 11 (114) :1245-&

[2] Growth temperature dependence of long-range alloy order and magnetic properties of epitaxial FexPt1-x (x similar or equal to 0.5) films [J].

Farrow, RFC ;

Weller, D ;

Marks, RF ;

Toney, MF ;

Horn, S ;

Harp, GR ;

Cebollada, A .

APPLIED PHYSICS LETTERS, 1996, 69 (08) :1166-1168

[3] Spin-valve heads utilizing antiferromagnetic NiO layers [J].

Hamakawa, Y ;

Hoshiya, H ;

Kawabe, T ;

Suzuki, Y ;

Arai, R ;

Nakamoto, K ;

Fuyama, M ;

Sugita, Y .

IEEE TRANSACTIONS ON MAGNETICS, 1996, 32 (01) :149-155

[4] Study of exchange-coupled bias field in Ni-Fe/Pd-Pt-Mn thin films [J].

Kishi, H ;

Kitade, Y ;

Miyake, Y ;

Tanaka, A ;

Kobayashi, K .

IEEE TRANSACTIONS ON MAGNETICS, 1996, 32 (05) :3380-3382

[5] MAGNETIC STRUCTURES AND EXCHANGE INTERACTIONS IN MN-PT SYSTEM [J].

KREN, E ;

KADAR, G ;

PAL, L ;

SOLYOM, J ;

SZABO, P ;

TARNOCZI, T .

PHYSICAL REVIEW, 1968, 171 (02) :574-&

[6]

LANDOLTBORNSTEI, 1986, ZAHLENWERTE FUNKT, V19, P588

[7] IMPROVED EXCHANGE COUPLING BETWEEN FERROMAGNETIC NI-FE AND ANTIFERROMAGNETIC NI-MN-BASED FILMS [J].

LIN, T ;

MAURI, D ;

STAUD, N ;

HWANG, C ;

HOWARD, JK ;

GORMAN, GL .

APPLIED PHYSICS LETTERS, 1994, 65 (09) :1183-1185

[8] NEW MAGNETIC ANISOTROPY [J].

MEIKLEJOHN, WH ;

BEAN, CP .

PHYSICAL REVIEW, 1956, 102 (05) :1413-1414

← 1 →