Occurrence of Mixed Phase in Bi0.5Sr0.5Mn0.9Cr0.1O3 Bulk Sample: Electron Paramagnetic Resonance and Magnetization Studies

Bhagyashree, K S and Goveas, Lora Rita and Bhat, S (2019) Occurrence of Mixed Phase in Bi0.5Sr0.5Mn0.9Cr0.1O3 Bulk Sample: Electron Paramagnetic Resonance and Magnetization Studies. In: APPLIED MAGNETIC RESONANCE, 50 (9). pp. 1049-1058.

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Abstract

We study the effects of 10% Cr substitution in Mn sites of Bi0.5Sr0.5MnO3 on the antiferromagnetic (AFM) (T-N similar to 110 K) transition using structural, magnetic and electron paramagnetic resonance (EPR) techniques. Field cooled (FC) and zero field cooled (ZFC) magnetization measurements done from 400 K down to 4 K show that the compound is in the paramagnetic (PM) phase till 50 K where it undergoes a transition to a short-range ferromagnetic phase (FM). Electron paramagnetic resonance measurements performed in the temperature range of 300 K to 80 K conform with the magnetization measurements as symmetric signals are observed owing to the paramagnetic phase. Below 80 K, signals become asymmetric. Electron paramagnetic resonance intensity peaks at similar to 110 K, the decreasing intensity below this temperature confirming the presence of antiferromagnetism. We conclude that below 50 K the magnetization and EPR results are consistent with a cluster glass phase of BSMCO, where ferromagnetic clusters coexist with an antiferromagnetic background.

Item Type:	Journal Article
Publication:	APPLIED MAGNETIC RESONANCE
Publisher:	SPRINGER WIEN
Additional Information:	copyright for this article belongs to SPRINGER WIEN
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	19 Sep 2019 06:20
Last Modified:	19 Sep 2019 06:20
URI:	http://eprints.iisc.ac.in/id/eprint/63509

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