Influence of the iron content on the formation process of substituted Co-Nd strontium hexaferrite prepared by the citrate precursor method

被引：44

作者：

Jacobo, S. E. ^{[3
]}

Herme, C. ^{[3
]}

Bercoff, P. G. ^{[1
,2
]}

机构：

[1] Univ Nacl Cordoba, FaMAF, RA-5000 Cordoba, Argentina

[2] Consejo Nacl Invest Cient & Tecn, IFEG, RA-5000 Cordoba, Argentina

[3] UBA, Fac Ingn, LAFMACEL, Buenos Aires, DF, Argentina

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 495卷 / 02期

关键词：

Ceramics; Permanent magnets; Chemical synthesis; Magnetic measurements; X-ray diffraction; MAGNETIC-PROPERTIES; FERRITES; POWDERS;

D O I：

10.1016/j.jallcom.2009.10.172

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Strontium hexaferrite samples of different composition were prepared by the self-combustion method and heat-treated in air at 1100 degrees C for 2h center dot SrFe12O19 (SO), Sr0 7Nd0 3Fet 1 7Co0 3O19 (SS). Sr0 7Nd0 3Fe10 7Co0 3O19 (SM) and Sr0 7Nd0.3Fe8 4Co0 3O19 (SL). The phase identification of the powders was performed using XRD Only sample SL (with the lowest iron concentration) shows well-defined peaks of the hexaferrite phase with no secondary phases Nd-Co substitution modifies saturation magnetization (M-s) and coercivity (H-c) but only samples with low Fe3+ content (SL and SM) show the best magnetic properties, indicating that the best results for applications of this ferrite will be obtained with an iron deficiency in the stoichiometric formulation. (C) 2009 Elsevier B V All rights reserved

引用

页码：513 / 515

页数：3

共 13 条

[1] Fe/Sr ratio effect on magnetic properties of strontium ferrite powders synthesized microwave-induced combustion process [J].

Fu, YP ;

Lin, CH .

JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 386 (1-2) :222-227

[2] Magnetic properties of a new family of rare-earth substituted ferrites [J].

Grössinger, R ;

Blanco, CT ;

Küpferling, M ;

Müller, M ;

Wiesinger, G .

PHYSICA B-CONDENSED MATTER, 2003, 327 (2-4) :202-207

[3] Mossbauer analysis of Nd-Co M-type strontium hexaferrite powders with different iron content [J].

Herme, Carlos ;

Jacobo, Silvia E. ;

Bercoff, Paula G. ;

Arcondo, Bibiana .

HYPERFINE INTERACTIONS, 2010, 195 (1-3) :205-212

[4]

Jonker G.H., 1956, PHILIPS TECH REV, V18, P145, DOI [10.1049/PI-B-1.1957.0041, DOI 10.1049/PI-B-1.1957.0041]

[5] LaCo-substituted ferrite magnets, a new class of high-grade ceramic magnets;: intrinsic and microstructural aspects [J].

Kools, F ;

Morel, A ;

Grössinger, R ;

Le Breton, JM ;

Tenaud, P .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 242 :1270-1276

[6] Influence of the presence of Co on the rare earth solubility in M-type hexaferrite powders [J].

Lechevallier, L. ;

Le Breton, J. M. ;

Morel, A. ;

Tenaud, P. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 316 (02) :E109-E111

[7]

LIU X, 2006, J MAGN MAG MAT, DOI DOI 10.1016/JJMMM200602096

[8] Influences of La3+ substitution on the structure and magnetic properties of M-type strontium ferrites [J].

Liu, XS ;

Zhong, W ;

Yang, S ;

Yu, Z ;

Gu, BX ;

Du, YW .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 238 (2-3) :207-214

[9] Application of FORC distributions to the study of magnetic interactions in ferrites of composition Ba1-xLax+δFe12-xCoxO19 [J].

Oliva, M. I. ;

Bercoff, P. G. ;

Bertorello, H. R. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2008, 320 (14) :E100-E103

[10]

Rathenau G. W., 1952, Phillips Tech. Rev, V13, P194

← 1 2 →