Effect of pH on structural and magnetic properties of nanocrystalline Y3Fe5O12 by aqueous co-precipitation method

Praveena, K and Sadhana, K and Srinath, S and Murthy, SR (2014) Effect of pH on structural and magnetic properties of nanocrystalline Y3Fe5O12 by aqueous co-precipitation method. In: MATERIALS RESEARCH INNOVATIONS, 18 (1). pp. 69-75.

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Abstract

The Y3Fe5O12 (YIG) nanopowders were synthesised at different pH using co-precipitation method. The effect of pH on the phase formation of YIG is characterised using XRD, TEM, FTIR and TG/DTA. From the Scherer formula, the particle sizes of the powders were found to be 13, 19 and 28 nm for pH=10, 11 and 12 respectively. It is found that as the pH of the solution increase the particle size is also increases. It is also clear from the TG/DTA curves that as the pH is increasing the weight losses were found to be small. The nanopowders were sintered at 600, 700, 800 and 900 degrees C for 5 h using conventional sintering method. The phase formation is completed at 800 degrees C/5 h which is correlated with TG/DTA. The average grain size of the samples is found to be similar to 161 nm. The high values of M-s=23 emu g(-1) and H-c=22 Oe were recorded for the sample sintered at 900 degrees C.

Item Type:	Journal Article
Publication:	MATERIALS RESEARCH INNOVATIONS
Publisher:	MANEY PUBLISHING
Additional Information:	Copyright for this article belongs to the MANEY PUBLISHING, STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND
Keywords:	Ceramics; Garnets; Co-precipitation; TG/DTA; Magnetic properties
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	24 Apr 2014 07:15
Last Modified:	24 Apr 2014 07:19
URI:	http://eprints.iisc.ac.in/id/eprint/48887

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