DC CONDUCTIVITY FOR ZNXMG0.8-XNI0.2FE2O4 FERRITES

被引：40

作者：

ELHITI, MA

机构：

[1] Department of Physics, Faculty of Science, Tanta University, Tanta

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1994年 / 136卷 / 1-2期

关键词：

D O I：

10.1016/0304-8853(94)90457-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The de conductivity was studied as a function of temperature (T) and composition (x) for a series of samples of the spinel ferrite system ZnxMg0.8-xNi0.2Fe2O4, with x = 0.0, 0.2, 0.4, 0.6 and 0.8. The de conductivity was found to increase with increasing temperature, while it decreases with increasing zinc ion content and porosity. The magnetic transition temperature T-S and Curie transition temperatures T-C decrease, while the activation energy for conduction increases as the magnesium ions are progressively replaced by nonmagnetic zinc ions.

引用

页码：138 / 142

页数：5

共 18 条

[1] EFFECT OF MAGNETIC ORDER ON THE CONDUCTIVITY IN CO-ZN FERRITES [J].

AHMED, MA ;

ELNIMR, MK ;

TAWFIK, A ;

ABOELATA, AM .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1988, 7 (06) :639-640

[2]

AWAD A, 1977, J PHYSIQUE, V38, P237

[3]

BERZHANSKII A, 1989, PHYS STATUS SOLIDI B, V158, P643

[4]

ELHITI MA, IN PRESS J MAT SCI

[5] THERMOPOWER-COMPOSITION DEPENDENCE IN IRON-CHROMIUM, IRON-ZINC, AND IRON-COBALT FERRITES [J].

GILLOT, B .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1982, 69 (02) :719-725

[6] DEPENDENCE OF ELECTRICAL-PROPERTIES IN IRON COBALT, IRON ZINC FERRITES NEAR STOICHIOMETRY ON FIRING TEMPERATURE AND ATMOSPHERE [J].

GILLOT, B ;

JEMMALI, F .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1983, 76 (02) :601-608

[7]

KOOPS CG, 1953, PHYS REV, V83, P121

[8] SOFT MAGNETIC FERRITES - DEVELOPMENT OR STAGNATION [J].

KULIKOWSKI, J .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1984, 41 (1-3) :56-62

[9] ELECTRICAL-CONDUCTIVITY OF SOME NICKEL-ZINC FERRITES [J].

MURTHY, VRK ;

SOBHANADRI, J .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1976, 38 (02) :647-651

[10]

NAIK AB, 1985, INDIAN J PURE AP PHY, V23, P436

← 1 2 →