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Microstructural evolution and magnetic properties of size-controlled nanocrystalline Ni in Ni(OH)(2)-ZrO2 composite

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Title Microstructural evolution and magnetic properties of size-controlled nanocrystalline Ni in Ni(OH)(2)-ZrO2 composite
 
Creator NAYAK, BB
VITTA, S
BAHADUR, D
 
Subject nanoparticles
nickel
chemistry
particles
 
Description Size-controlled nanocrystallites of Ni varying in size from 2 to 26 nm distributed in a nonmagnetic matrix of Ni(OH)(2) ZrO2 have been prepared by changing the reduction reaction time and by adding different concentrations of ZrOCl2 solution to the initial reaction mixture. X-ray photoelectron spectroscopy indicates the presence of B2O3, Ni(OH)2, and ZrO2 with Ni nanocrystals in the as-prepared composites. The room-temperature saturation magnetization and coercivity of the composites increases from similar to 1.5 to 10 emu g(-1) and 100 to 200 Oe, respectively, when the ZrOCl2 concentration in the reaction mixture increases to 0.10 M. The nanocrystals prepared without the addition of ZrOCl2 exhibit a typical ferromagnetic response at 300 K, while that prepared with the addition of 0.10 M ZrOCl2 shows a ferromagnetic response up to 400 K with higher saturation magnetization and coercivity.
 
Publisher MATERIALS RESEARCH SOCIETY
 
Date 2011-08-18T16:04:08Z
2011-12-26T12:55:49Z
2011-12-27T05:42:44Z
2011-08-18T16:04:08Z
2011-12-26T12:55:49Z
2011-12-27T05:42:44Z
2007
 
Type Article
 
Identifier JOURNAL OF MATERIALS RESEARCH, 22(6), 1520-1526
0884-2914
http://dx.doi.org/10.1557/jmr.2007.0214
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10063
http://hdl.handle.net/10054/10063
 
Language en