Ferrimagnetism and magnetic phase separation in Nd1-xYxMnO3 studied by magnetization and high frequency electron paramagnetic resonance

Nair, Harikrishnan S and Yadav, Ruchika and Adiga, Shilpa and Rao, SS and van Tol, Johan and Elizabeth, Suja (2015) Ferrimagnetism and magnetic phase separation in Nd1-xYxMnO3 studied by magnetization and high frequency electron paramagnetic resonance. In: PHYSICA B-CONDENSED MATTER, 456 . pp. 108-114.

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Abstract

Ferrimagnetism and metamagnetic features tunable by composition are observed in the magnetic response of Nd1-xYxMnO3, for x=0.1-0.5. For all values of x in the series, the compound crystallizes in orthorhombic Pbnm space group similar to NdMnO3. Magnetization studies reveal a phase transition of the Mn-sublattice below T-N(Mn) approximate to 80 K for all compositions, which, decreases up on diluting the Nd-site with Yttrium. For x=0.35, ferrimagnetism is observed. At 5 K, metamagnetic transition is observed for all compositions x < 0.4. The evolution of magnetic ground states and appearance of ferrimagnetism in Nd1-xYxMnO3 can be accounted for by invoking the scenario of magnetic phase separation. The high frequency electron paramagnetic resonance measurements on x=0.4 sample, which is close to the critical composition for phase separation, revealed complex temperature dependent lineshapes clearly supporting the assumption of magnetic phase separation. (C) 2014 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	PHYSICA B-CONDENSED MATTER
Publisher:	ELSEVIER SCIENCE BV
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Keywords:	Ferrimagnetism; Magnetic phase separation; Manganites
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	06 Feb 2015 14:45
Last Modified:	06 Feb 2015 14:45
URI:	http://eprints.iisc.ac.in/id/eprint/50775

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