Room temperature ferromagnetism in Gd-doped In2O3 nanoparticles obtained by auto-combustion method

Hosamani, G and Jagadale, BN and Manjanna, J and Shivaprasad, SM and Shukla, DK and Bhat, JS (2020) Room temperature ferromagnetism in Gd-doped In2O3 nanoparticles obtained by auto-combustion method. In: Journal of Materials Science: Materials in Electronics, 31 (10). pp. 7871-7879.

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Abstract

For spintronic devices, the room temperature ferromagnetism in dilute semiconductors is essential. We report here the successful preparation of (In1�xGdx)2O3 x = 0, 0.05, 0.10 by auto-combustion method. The powder XRD and SAED data confirmed the formation of single-phase cubic bixbyite In2O3. The particles are in the range of 18�22 nm size. Raman spectra showed doping of Gd3+ ions in the In2O3 lattice. The 3+ valence state of In and Gd was confirmed from XPS and XAS techniques. The magnetic hysteresis loop and EPR spectra showed the weak ferromagnetism in (In0.90Gdn0.10)2O3, while the pure In2O3 is diamagnetic and (In0.95Gdn0.05)2O3 is paramagnetic. To our knowledge, it is the first study to report the RTFM in Gd-doped In2O3 nanoparticles. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.

Item Type:	Journal Article
Publication:	Journal of Materials Science: Materials in Electronics
Publisher:	Springer
Additional Information:	The copyright of this article belongs to Springer
Keywords:	Combustion; Electron spin resonance spectroscopy; Ferromagnetism; Indium compounds; Magnetic materials; Nanoparticles; Semiconductor doping, Auto-combustion methods; EPR spectra; Room temperature ferromagnetism; Single phase; Spintronic device; Valence state; Weak ferromagnetism; XAS techniques, Gadolinium compounds
Department/Centre:	Others
Date Deposited:	19 Jun 2020 07:49
Last Modified:	19 Jun 2020 07:49
URI:	http://eprints.iisc.ac.in/id/eprint/65246

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