Magnetic properties of a partially inverted zinc ferrite synthesized by a new coprecipitation technique using urea

被引：69

作者：

Kundu, A ^{[1
]}

Upadhyay, C ^{[1
]}

Verma, HC ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

来源：

PHYSICS LETTERS A | 2003年 / 311卷 / 4-5期

关键词：

zinc ferrite; nanoparticles; coprecipitation; urea hydrolysis;

D O I：

10.1016/S0375-9601(03)00509-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nanosized zinc ferrite powder has been prepared by a new coprecipitation technique using urea. A single phase crystalline 13 nm zinc ferrite powder is obtained by heating a mixed zinc and iron salt solution with urea in a nitrogen atmosphere at about 100 degreesC for 2 minutes followed by 20 minutes heating at 80 degreesC before being cooled to room temperature. The powder shows an unusually high saturation magnetization of about 21 emu/g at room temperature and about 53 emu/g at 10 K. Mossbauer studies show magnetic ordering in the powder even at room temperature. It also indicates the presence of non-inverted, nanosize, paramagnetic fraction. The Mossbauer parameters and the Neel temperature of this fraction are different from the standard values for bulk zinc ferrite. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：410 / 415

页数：6

共 13 条

[1] On the magnetic properties of ultra-fine zinc ferrites [J].

Anantharaman, MR ;

Jagatheesan, S ;

Malini, KA ;

Sindhu, S ;

Narayanasamy, A ;

Chinnasamy, CN ;

Jacobs, JP ;

Reijne, S ;

Seshan, K ;

Smits, RHH ;

Brongersma, HH .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 189 (01) :83-88

[2] The influence of Fe3+ ions at tetrahedral sites on the magnetic properties of nanocrystalline ZnFe2O4 [J].

Chinnasamy, CN ;

Narayanasamy, A ;

Ponpandian, N ;

Chattopadhyay, K .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 304 :983-987

[3] Ferrimagnetic ordering in; nanostructured zinc ferrite [J].

Chinnasamy, CN ;

Narayanasamy, A ;

Ponpandian, N ;

Chattopadhyay, K ;

Guérault, H ;

Greneche, JM .

SCRIPTA MATERIALIA, 2001, 44 (8-9) :1407-1410

[4] The effect of the starting solution on the physico-chemical properties of zinc ferrite synthesized at low temperature [J].

de Vidales, JLM ;

López-Delgado, A ;

Vila, E ;

López, FA .

JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 287 (1-2) :276-283

[5] Structural evolution of ball-milled ZnFe2O4 [J].

Ehrhardt, H ;

Campbell, SJ ;

Hofmann, M .

JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 339 (1-2) :255-260

[6] Ionic disorder and Neel temperature in ZnFe2O4 nanoparticles [J].

Goya, GF ;

Rechenberg, HR .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 196 :191-192

[7] FERRIMAGNETIC ZINC FERRITE FINE POWDERS [J].

HAMDEH, HH ;

HO, JC ;

OLIVER, SA ;

WILLEY, RJ ;

KRAMER, J ;

CHEN, YY ;

LIN, SH ;

YAO, YD ;

DATURI, M ;

BUSCA, G .

IEEE TRANSACTIONS ON MAGNETICS, 1995, 31 (06) :3808-3810

[8] Magnetic properties of partially-inverted zinc ferrite aerogel powders [J].

Hamdeh, HH ;

Ho, JC ;

Oliver, SA ;

Willey, RJ ;

Oliveri, G ;

Busca, G .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (04) :1851-1857

[9]

JAYADEVAN B, 1994, J APPL PHYS, V76, P6325

[10] CATION DISTRIBUTION IN ZNFE2O4 FINE PARTICLES STUDIED BY NEUTRON POWDER DIFFRACTION [J].

KAMIYAMA, T ;

HANEDA, K ;

SATO, T ;

IKEDA, S ;

ASANO, H .

SOLID STATE COMMUNICATIONS, 1992, 81 (07) :563-566

← 1 2 →