MAGNETIZATION CHANGES WITH MODULATION PERIOD IN FE3O4/NIO SUPERLATTICES

被引：25

作者：

BERRY, SD ^{[1
]}

LIND, DM ^{[1
]}

CHERN, G ^{[1
]}

MATHIAS, H ^{[1
]}

机构：

[1] FLORIDA STATE UNIV,CTR MAT RES & TECHNOL,TALLAHASSEE,FL 32306

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1993年 / 123卷 / 1-2期

关键词：

D O I：

10.1016/0304-8853(93)90021-S

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have magnetically characterized single crystal Fe3O4/NiO superlattices grown on MgO(001), where the layer thickness has been varied over a wide range. Hysteresis for modulation wavelength LAMBDA(mod) = 258 angstrom is similar to bulk Fe3O4, while loops for LAMBDA(mod) < 80 angstrom are nearly linear with applied field with minimal hysteresis and remanence. The magnetization slopes of the latter are roughly proportional to LAMBDA(mod), and increase from 5 to 300 K. MeasurementS above 300 K suggest that both exchange coupling across NiO/Fe3O4 interfaces and strain-induced variations in anisotropy, rather than paramagnetism, lead to this linear behavior.

引用

页码：126 / 132

页数：7

共 26 条

[1]

[Anonymous], 1963, MAGNETISM

[2] INFLUENCE OF NONSTOICHIOMETRY ON THE VERWEY TRANSITION IN FE3(1-DELTA)O4 [J].

ARAGON, R ;

SHEPHERD, JP ;

KOENITZER, JW ;

BUTTREY, DJ ;

RASMUSSEN, RJ ;

HONIG, JM .

JOURNAL OF APPLIED PHYSICS, 1985, 57 (08) :3221-3222

[3] EXCHANGE ANISOTROPY AND STRAIN INTERACTIONS IN NI-NIO SYSTEM [J].

BERKOWIT.AE ;

GREINER, JH .

JOURNAL OF APPLIED PHYSICS, 1965, 36 (10) :3330-&

[4]

BERRY SD, UNPUB

[5] MODULATED ELECTRIC-CONDUCTIVITY IN FE3O4/NIO SUPERLATTICES [J].

CHERN, G ;

BERRY, SD ;

LIND, DM ;

MATHIAS, H ;

TESTARDI, LR .

APPLIED PHYSICS LETTERS, 1991, 58 (22) :2512-2513

[6]

CHERN G, 1991, PHYS REV LETT, V68, P114

[7] THEORY OF ANTIFERROMAGNETIC SUPERLATTICES AT FINITE TEMPERATURES [J].

DIEP, HT .

PHYSICAL REVIEW B, 1989, 40 (07) :4818-4823

[8]

ERWIN RM, COMMUNICATION

[9] NEW APPROACHES TO EPITAXY OF TRANSITION-METALS AND RARE-EARTHS - HETEROEPITAXY ON LATTICE-MATCHED BUFFER FILMS ON SEMICONDUCTORS [J].

FARROW, RFC ;

PARKIN, SSP ;

SPERIOSU, VS .

JOURNAL OF APPLIED PHYSICS, 1988, 64 (10) :5315-5320

[10] STRAIN-ASSISTED EPITAXIAL-GROWTH OF NEW ORDERED COMPOUNDS [J].

FLYNN, CP .

PHYSICAL REVIEW LETTERS, 1986, 57 (05) :599-602

← 1 2 3 →