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Title: Structural and multiferroic properties of self doped yttrium manganites YMn{sub 1+X}O{sub 3}

We have prepared the polycrystalline samples of compositions YMn{sub 1+x}O{sub 3} (x =0, 0.17) and studied their structural properties using x-ray diffraction and Raman spectroscopy measurements. The sample with composition Y:Mn = 1:1 showed the antiferromagnetic transition in the magnetization verses temperature (M-T) measurements near 70 K similar to standard YMnO{sub 3}. But the sample with composition Y:Mn = 1:1.17 showed glass like magnetic transition around 42 K in the M-T measurements. Also, a hysteresis in the isothermal magnetization curve at 2K was observed for the Mn rich sample, while the linear trend of magnetization with magnetic field was noted for the sample with equal Y/Mn ratio at 2K. We understood that the Mn excess in Mn rich sample results in the formation of Mn{sup 2+} ions and the magnetic exchange among the Mn{sup 3+/}Mn{sup 2+} ions is responsible for the observed magnetic behaviour. The room temperature ferroelectric properties of the studied samples were also investigated by measuring P-E loops.
Authors:
; ;  [1]
  1. UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore-452001 (India)
Publication Date:
OSTI Identifier:
22391706
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1661; Journal Issue: 1; Conference: ICCMP 2014: International Conference on Condensed Matter Physics 2014, Shimla (India), 4-6 Nov 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTIFERROMAGNETISM; DOPED MATERIALS; FERROELECTRIC MATERIALS; HYSTERESIS; MAGNETIC FIELDS; MAGNETIZATION; MANGANATES; MANGANESE IONS; POLYCRYSTALS; RAMAN SPECTROSCOPY; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; X-RAY DIFFRACTION; YTTRIUM COMPOUNDS