Annealing effects on structural and magnetic properties of α-Fe2O3 nanoparticles

被引：27

作者：

Vasquez-Mansilla, M

Zysler, RD ^{[1
]}

Arciprete, C

Dimitrijewits, M

Rodriguez-Sierra, D

Saragovi, C

机构：

[1] Ctr Atom Bariloche, RA-8400 SC Bariloche, Rio Negro, Argentina

[2] Inst Balseiro, RA-8400 SC Bariloche, Rio Negro, Argentina

[3] Ctr Atom Constituyentes, Dept Fis, RA-1650 Buenos Aires, DF, Argentina

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷

关键词：

nanoparticles; nanocrystallization; hematite; annealing effect;

D O I：

10.1016/S0304-8853(00)00858-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of transformations induced by annealing on the structure and magnetic properties of alpha -Fe2O3 antiferromagnetic nanoparticles synthesized by chemical route has been investigated by transmission electron microscopy, magnetization measurements and Mossbauer spectroscopy. Annealing of these samples re-crystallize the nanoparticles without changing its mean size modifying the crystalline anisotropy energy of the nanoparticles leading to a change in the reversible-irreversible regime and in the Morin transition behaviour. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：1907 / 1909

页数：3

共 7 条

[1] MORIN TEMPERATURE OF ANNEALED SUBMICRONIC ALPHA-F2O3 PARTICLES [J].

AMIN, N ;

ARAJS, S .

PHYSICAL REVIEW B, 1987, 35 (10) :4810-4811

[2]

ARTMAN JO, 1965, PHYS REV A, V138, P912

[3] Interplay of surface conditions, particle size, stoichiometry, cell parameters, and magnetism in synthetic hematite-like materials [J].

Dang, MZ ;

Rancourt, DG ;

Dutrizac, JE ;

Lamarche, G ;

Provencher, R .

HYPERFINE INTERACTIONS, 1998, 117 (1-4) :271-319

[4] *PROPRIETES MAGNETIQUES DU SESQUIOXYDE DE FER FE2O3-ALPHA [J].

GUILLAUD, C .

JOURNAL DE PHYSIQUE ET LE RADIUM, 1951, 12 (03) :489-491

[5] NEUTRON DIFFRACTION BY PARAMAGNETIC AND ANTIFERROMAGNETIC SUBSTANCES [J].

SHULL, CG ;

STRAUSER, WA ;

WOLLAN, EO .

PHYSICAL REVIEW, 1951, 83 (02) :333-345

[6]

VANDENBERGHE RE, 1991, DIST3E PROGRAM BASED

[7] Magnetic interaction evidence in α-Fe2O3 nanoparticles by magnetization and Mossbauer measurements [J].

Vasquez-Mansilla, M ;

Zysler, RD ;

Apciprete, C ;

Dimitrijewits, MI ;

Saragovi, C ;

Greneche, JM .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 204 (1-2) :29-35

← 1 →