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Thermomagnetic Analysis of Nanocrystalline Nd4.5Fe77B18.5 Alloy

SYSNO ASEP	0339958
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Thermomagnetic Analysis of Nanocrystalline Nd4.5Fe77B18.5 Alloy
Author(s)	Talijan, N. (CS) Ćosović, V. (CS) Stajić-Trošić, J. (CS) Grujić, A. (CS) Žák, Tomáš (UFM-A)_RID Lee, Z. (US) Radmilović, V. (US)
Number of authors	7
Source Title	Materials Transactions. - : Japan Institute of Metals and Materials - ISSN 1345-9678 Roč. 50, č. 9 (2009), s. 2302-2307
Number of pages	6 s.
Language	eng - English
Country	JP - Japan
Keywords	low-neodymium neodymium-iron-boron alloy ; thermomagnetic measurements ; X-ray diffraction ; magnetic properties
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	1M0512 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
UT WOS	000271242900030
DOI	10.2320/matertrans.M2009138
Annotation	Changes in the phase composition and crystallite size of a rapid quenched Nd4.5Fe77B18.5 alloy, caused by thermomagnetic measurements (TM) have been studied using XRD methods of phase analysis. crystallite size and lattice microstrain determination. Structural changes in regard to optimal magnetic state were additionally analyzed by TEM. Magnetic properties in optimal magnetic state and after TM were observed using room temperature SQUID measurements. The obtained experimental results suggest the Fe3B/Nd2Fe14B and partly alpha-Fe nanocomposite structure of the alloy in the optimized magnetic state. with mean crystallite size (< 30nm). After TM. an increased amount of alpha-Fe phase, presence of different oxide and Fe-B phases as well as growth of crystallites are found to be the main reasons for the observed quality loss of hard magnetic properties.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2010

Number of the records: 1