Mossbauer spectroscopic and x-ray diffraction studies of Fe/SiO2 nanocomposite soft magnetic materials

被引：13

作者：

Yang, DP ^{[1
]}

Zhang, YD

Hui, S

机构：

[1] Coll Holy Cross, Dept Phys, Worcester, MA 01610 USA

[2] InframatR Corp, Farmington, CT 06032 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2002年 / 91卷 / 10期

关键词：

D O I：

10.1063/1.1446120

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nanocomposite high resistive soft magnetic materials Fe/SiO2 (Fe volume fraction 50%) have been synthesized using a wet chemical reaction method. A series of metal-ceramic Fe/SiO2 nanocomposite powder samples were obtained by annealing the precursor at temperatures from 400 to 900 degreesC in the presence of a reducing agent. The compositions of the precursor and the successive heat-treated samples have been investigated by Fe-57 Mossbauer spectroscopy and x-ray diffraction, which revealed that the annealing process reduces nanosize granular ferrihydrite to alpha-Fe, and indicated that 800 degreesC is the optimum annealing temperature. (C) 2000 American Institute of Physics.

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页码：8198 / 8200

页数：3

相关论文

共 18 条

[1] Preparation of Co and Fe nanocomposites in SiO2 matrices [J].

Basumallick, A ;

Biswas, K ;

Mukherjee, S ;

Das, GC .

MATERIALS LETTERS, 1997, 30 (5-6) :363-368

[2] KR-INDUCED MIXING AND ANNEALING EFFECTS AT THE FE/SIO2 INTERFACE [J].

BATTAGLIN, G ;

RUSSO, SL ;

PACCAGNELLA, A ;

POLATO, P ;

PRINCIPI, G .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1990, 123 (1-3) :427-431

[3] Effects of preparation conditions on the hysteresis behavior of granular Fe-SiO2 [J].

Christodoulides, JA ;

Shevchenko, NB ;

Hadjipanayis, GC ;

Papaefthymiou, V .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :5558-5560

[4]

Coey J. M. D., 1974, J PHYS FRANCE C6, V35, P89

[5] CHARACTERIZATION AND MAGNETIC-PROPERTIES OF NATURAL FERRIC GEL [J].

COEY, JMD ;

READMAN, PW .

EARTH AND PLANETARY SCIENCE LETTERS, 1973, 21 (01) :45-51

[6] Mossbauer analysis of the phase distribution present in nanoparticulate Fe/SiO2 samples [J].

de Julián, C ;

Alcázar, GAP ;

Cebollada, F ;

Montero, MI ;

González, JM ;

Marco, JF .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 203 :175-177

[7] STRUCTURAL MODEL FOR FERRIHYDRITE [J].

DRITS, VA ;

SAKHAROV, BA ;

SALYN, AL ;

MANCEAU, A .

CLAY MINERALS, 1993, 28 (02) :185-207

[8] STRUCTURE AND 100MHZ SOFT-MAGNETIC PROPERTIES IN MULTILAYERS AND GRANULAR THIN-FILMS [J].

FUJIMORI, H .

SCRIPTA METALLURGICA ET MATERIALIA, 1995, 33 (10-11) :1625-1636

[9] High resistive nanocrystalline Fe-M-O (M=Hf, Zr, rare-earth metals) soft magnetic films for high-frequency applications [J].

Hayakawa, Y ;

Makino, A ;

Fujimori, H ;

Inoue, A .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :3747-3752

[10] Occurrence and constitution of natural and synthetic ferrihydrite, a widespread iron oxyhydroxide [J].

Jambor, JL ;

Dutrizac, JE .

CHEMICAL REVIEWS, 1998, 98 (07) :2549-2585