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Observation of a cubical-like microstructure of strontium iron garnet and yttrium iron garnet prepared via sol-gel technique

Nasir, N. and Yahya, N. and Kashif, M. and Daud, H. and Akhtar, M. N. and Zaid, H. M. and Shafie, A. and Teng, L. C (2011) Observation of a cubical-like microstructure of strontium iron garnet and yttrium iron garnet prepared via sol-gel technique. Journal . ISSN 15334880

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Abstract

This is our initial response towards preparation of nano-inductors garnet for high operating frequencies strontium iron garnet (Sr3Fe5O12) denoted as SrIG and yttrium iron garnet (Y3Fe5O12) denoted as YIG. The garnet nano crystals were prepared by novel sol-gel technique. The phase and crystal structure of the prepared samples were identified by using X-ray diffraction analysis. SEM images were done to reveal the surface morphology of the samples. Raman spectra was taken for yttrium iron garnet (Y3Fe5O12). The magnetic properties of the samples namely initial permeability (micro), relative loss factor (RLF) and quality factor (Q-Factor) were done by using LCR meter. From the XRD profile, both of the Y3Fe5O12 and Sr3Fe5O12 samples showed single phase garnet and crystallization had completely occurred at 900 degrees C for the SrIG and 950 degrees C for the YIG samples. The YIG sample showed extremely low RLF value (0.0082) and high density 4.623 g/cm3. Interesting however is the high Q factor (20-60) shown by the Sr3Fe5O12 sample from 20-100 MHz. This high performance magnetic property is attributed to the homogenous and cubical-like microstructure. The YIG particles were used as magnetic feeder for EM transmitter. It was observed that YIG magnetic feeder with the EM transmitter gave 39% higher magnetic field than without YIG magnetic feeder.

Item Type:Article
Subjects:L Education > L Education (General)
Departments / MOR / COE:Research Institutes > Energy
ID Code:7321
Deposited By: Assoc Prof Dr Noorhana Yahya
Deposited On:19 Dec 2011 00:54
Last Modified:30 Mar 2014 08:37

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