High saturation magnetization in La-Ce-Zn doped M-type Sr-hexaferrites

被引：35

作者：

Kang, Young-Min ^{[1
]}

机构：

[1] Samsung Elect, Motor R&D Grp, Suwon 443742, South Korea

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 03期

关键词：

Magnetic properties; Cation substitution; M-type hexaferrite; SUBSTITUTION; FERRITES;

D O I：

10.1016/j.ceramint.2014.11.125

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

La-Ce-Zn-doped M-type Sr-hexaferries SroaLa(0.3-x)CexFe(11.7)Zn(0.3)O(19-d) (0 <= x <= 0.3) were synthesized by solid-state reaction in both air and nitrogen atmospheres. The increased saturation magnetization of similar to 78 emu/g, which is similar to 5% higher than that of La Zn-doped Sr-hexaferrite (Sr(0.7)La(0.3)Fe(11.7)Zn(0.)3O(19)), could be obtained when the Ce-doped powder samples (x >= 0.1) were either annealed in nitrogen at 1100 degrees C after calcination in air at 1200 degrees C or directly calcined in nitrogen at 1200 degrees C. The increased M-S over the practical limit (similar to 74 emu/g) is attributable to both the formation of magnetic composites with high-M-S spinel phases and the M-S increase of the M-type hexafenite itself caused by oxygen vacancies. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：4354 / 4359

页数：6

共 17 条

[1] The effects of La-Zn substitution on the magnetic properties of Sr-magnetoplumbite ferrite nano-particles [J].

Bai, JM ;

Liu, XX ;

Xie, T ;

Wei, FL ;

Yang, Z .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2000, 68 (03) :182-185

[2] M-Type Hexaferrites With Enhanced Coercivity [J].

Barrera, V. ;

Betancourt, I. .

IEEE TRANSACTIONS ON MAGNETICS, 2013, 49 (08) :4630-4633

[3] Enhanced magnetic properties of substituted Sr-hexaferrite nanoparticles synthesized by co-precipitation method [J].

Gordani, Gholam Reza ;

Ghasemi, Ali ;

Saidi, Ali .

CERAMICS INTERNATIONAL, 2014, 40 (03) :4945-4952

[4]

Kobayashi Y., 2008, J. Jpn. Soc. Powder Metall., V55, P541

[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] Reinvestigation of the Fe-rich part of the pseudo-binary system SrO-Fe2O3 [J].

Langhof, N. ;

Seifert, D. ;

Goebbels, M. ;

Toepfer, J. .

JOURNAL OF SOLID STATE CHEMISTRY, 2009, 182 (09) :2409-2416

[7] Preparation and magnetic properties of La-Mn and La-Co doped barium hexaferrites prepared via an improved co-precipitation/molten salt method [J].

Liu, Ying ;

Drew, Michael G. B. ;

Liu, Yue ;

Wang, Jingping ;

Zhang, Milin .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2010, 322 (21) :3342-3345

[8] Optimization of the magnetic properties and microstructure of Co2+-La3+ substituted strontium hexaferrite by varying the production parameters [J].

Nourbakhsh, Amir Abbas ;

Vahedi, Azadeh ;

Nemati, Ali ;

Noorbakhsh, Mohsen ;

Mirsatari, Seyed Nezamoddin ;

Shaygan, Mehrdad ;

Mackenzie, Kenneth J. D. .

CERAMICS INTERNATIONAL, 2014, 40 (04) :5675-5680

[9]

Ogata Y., 2003, J JPN SOC POWDER POW, V50, P636

[10] Properties of Cr-substituted M-type barium ferrites prepared by nitrate-citrate gel-autocombustion process [J].

Ounnunkad, S ;

Winotai, P .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 301 (02) :292-300

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