Magnetic properties of Zn Mg ferrite fine powders (abstract)

dc.contributor.author	Hamdeh, Hussein H.	en_US
dc.contributor.author	Ho, J. C.	en_US
dc.contributor.author	Oliver, S. A.	en_US
dc.contributor.author	Willey, R. J.	en_US
dc.contributor.author	OShea, M. J.	en_US
dc.date.accessioned	2011-12-20T23:52:18Z
dc.date.available	2011-12-20T23:52:18Z
dc.date.issued	1996-04-01	en_US
dc.identifier.citation	Hamdeh, H. H.; Ho, J. C.; Oliver, S. A.; Willey, R. J.; OShea, M. J.; , "Magnetic properties of Zn Mg ferrite fine powders (abstract)," Journal of Applied Physics , vol.79, no.8, pp.5435, Apr 1996 doi: 10.1063/1.362330	en_US
dc.identifier.issn	0021-8979	en_US
dc.identifier.uri	http://dx.doi.org/10.1063/1.362330	en_US
dc.identifier.uri	http://hdl.handle.net/10057/4077
dc.description	The full text of this article is not available on SOAR. WSU users can access the article via IEEE Xplore database licensed by University Libraries: http://libcat.wichita.edu/vwebv/holdingsInfo?bibId=1045954	en_US
dc.description.abstract	Several fine powder samples of ZnxMg1-xFe2O4, 0=x=1, were prepared by the supercritical sol-gel (aerogel) process, and were annealed at 500?°C for 2 h. The structure, crystallite size and inversion parameter were determined by x-ray diffraction. The crystallite diameter of the as-prepared powders ranged from 6.5 to 8.5 nm. The minimum size was achieved for the samples with 0.25=x=0.50. After annealing the crystallite size increased by an average of 3 nm. The values of the inversion parameters, before and after annealing, reflect roughly the chemical preference of Zn cations to the tetrahedral sites and Mg cations to the octahedral sites of the spinel structure. However, these values indicate that the as-prepared materials were not in the equilibrium state. The magnetic properties were studied by 57Fe Mössbauer spectroscopy over a temperature range of 25 K to room temperature. Taking advantage of their sensitivity to the superparamagnetic behavior induced by the size effects, the Mössbauer spectra were used to determine the blocking temperatures. The calculated values peaked at x=0.50 for both the as-prepared and annealed powders. SQUID magnetometry measurements are currently underway. © 1996 American Institute of Physics.	en_US
dc.language.iso	en_US	en_US
dc.publisher	IEEE	en_US
dc.relation.ispartofseries	Journal of Applied Physics , vol.79, no.8, pp.5435	en_US
dc.title	Magnetic properties of Zn Mg ferrite fine powders (abstract)	en_US
dc.type	Article	en_US
dc.description.version	Peer reviewed article	en_US
dc.rights.holder	© IEEE, 1996	en_US