Joseyphus, Justin R and Narayanasamy, A and Sivakumar, N and Guyot, M and Krishnan, R and Ponpandian, N and Chattopadhyay, K (2004) Mechanochemical decomposition of Gd3Fe5O12 garnet phase. In: Proceedings of the International Conference on Magnetism (ICM 2003), JUL 27-AUG 01, 2003, Rome, ITALY.
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Gadolinium iron garnet was milled in a high energy ball mill to study its magnetic properties in the nanocrystalline regime. XRD reveals the decomposition of the garnet phase into Gd-orthoferrite and Gd2O3 on milling. The variation of saturation magnetization and coercivity with milling is attributed to a possible shift in the compensation temperature on grain size reduction and an increase in the orthoferrite content. The Mössbauer spectrum at 16 K is characteristic of the magnetically ordered state corresponding to GdIG, GdFeO3 and α-Fe2O3 whereas at room temperature it is a superparamagnetic doublet.
|Item Type:||Conference Paper|
|Additional Information:||Copyright of this article belongs to Elsevier Science.|
|Keywords:||Gadolinium iron garnet;Mechanical milling;Decomposition; Orthoferrite|
|Department/Centre:||Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)|
|Date Deposited:||08 Mar 2012 06:59|
|Last Modified:||08 Mar 2012 06:59|
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