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Title: Investigation of short range charge and spin correlation in Pr{sub 0.67}Ca{sub 0.33}MnO{sub 3} nanoparticles

The particle size effects on charge and spin correlation were studied for Pr{sub 0.67}Ca{sub 0.33}MnO{sub 3}(PCMO) by Electron Paramagnetic Resonance spectroscopy. Magnetization measurements suggests long range charge/orbital ordering (CO/OO) in bulk Pr{sub 0.67}Ca{sub 0.33}MnO{sub 3} at T ∼230 K and antiferromagnetic (AFM) ordering at T∼140K. With the reduction of particle size, CO is suppressed, AFM ordering gives way to ferromagnetic (FM) ordering. We find that with the reduction of particle size in Pr{sub 0.67}Ca{sub 0.33}MnO{sub 3} nanoparticles, the short range correlation in charge and associated spin degrees of freedom also gets suppressed.
Authors:
;  [1]
  1. Department of Physics, Indian Institute of Technology, Kanpur 208016 (India)
Publication Date:
OSTI Identifier:
22490250
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 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; ABSORPTION SPECTROSCOPY; ANTIFERROMAGNETISM; ATOMIC FORCE MICROSCOPY; CALCIUM COMPOUNDS; CARBON MONOXIDE; CORRELATIONS; DEGREES OF FREEDOM; ELECTRON SPIN RESONANCE; MAGNETIZATION; MANGANATES; NANOPARTICLES; PARTICLE SIZE; PRASEODYMIUM COMPOUNDS; REDUCTION; SPIN