Enhanced magnetisation in nanocrystalline high-energy milled MgFe2O4

被引:108
作者
Sepelák, V
Baabe, D
Mienert, D
Litterst, FJ
Becker, KD
机构
[1] Tech Univ Braunschweig, Inst Phys & Theoret Chem, D-38106 Braunschweig, Germany
[2] Tech Univ Braunschweig, Inst Met Phys & Nucl Condensed Matter Phys, D-38106 Braunschweig, Germany
[3] Slovak Acad Sci, Inst Geotech, SK-04353 Kosice, Slovakia
关键词
ferrites; nanostructure; high-energy ball milling; cation distribution; spin-glass;
D O I
10.1016/S1359-6462(02)00600-0
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The changes in magnesium ferrite (MgFe2O4) caused by high-energy milling are investigated by means of Mossbauer spectroscopy, magnetisation measurements, and electron microscopy. The observed enhancement of the magnetisation in nanoscale milled MgFe2O4 is discussed with respect to the mechanically induced cation redistribution and spin canting. (C) 2003 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:961 / 966
页数:6
相关论文
共 32 条
[11]   Magnetic properties of nanostructured CuFe2O4 [J].
Jiang, JZ ;
Goya, GF ;
Rechenberg, HR .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1999, 11 (20) :4063-4078
[12]   Surface spin disorder in NiFe2O4 nanoparticles [J].
Kodama, RH ;
Berkowitz, AE ;
McNiff, EJ ;
Foner, S .
PHYSICAL REVIEW LETTERS, 1996, 77 (02) :394-397
[13]   Surface spin disorder in ferrite nanoparticles (invited) [J].
Kodama, RH ;
Berkowitz, AE ;
McNiff, EJ ;
Foner, S .
JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :5552-5557
[14]   Atomic-scale magnetic modeling of oxide nanoparticles [J].
Kodama, RH ;
Berkowitz, AE .
PHYSICAL REVIEW B, 1999, 59 (09) :6321-6336
[15]  
MA E, 2001, METASTABLE MECH ALLO
[16]   Mossbauer studies of manganese ferrite fine particles processed by ball-milling [J].
Mahmoud, MH ;
Hamdeh, HH ;
Ho, JC ;
O'Shea, MJ ;
Walker, JC .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2000, 220 (2-3) :139-146
[17]   Magnetic properties of ultrafine MnFe2O4 powders prepared by mechanochemical processing -: art. no. 184414 [J].
Muroi, M ;
Street, R ;
McCormick, PG ;
Amighian, J .
PHYSICAL REVIEW B, 2001, 63 (18)
[18]   Large zinc cation occupancy of octahedral sites in mechanically activated zinc ferrite powders [J].
Oliver, SA ;
Harris, VG ;
Hamdeh, HH ;
Ho, JC .
APPLIED PHYSICS LETTERS, 2000, 76 (19) :2761-2763
[19]   RECOILLESS-FRACTION RATIOS FOR FE57 IN OCTAHEDRAL AND TETRAHEDRAL SITES OF A SPINEL AND A GARNET [J].
SAWATZKY, GA ;
VANDERWO.F ;
MORRISH, AH .
PHYSICAL REVIEW, 1969, 183 (02) :383-+
[20]   Magnetism of nanostructured mechanically activated and mechanosynthesized spinel ferrites [J].
Sepelák, V ;
Wissmann, S ;
Becker, KD .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 203 :135-137