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Title: Low temperature magnetic properties of magnesium substituted YbMnO{sub 3}

Structural and magnetic properties of polycrystalline Yb{sub 1−x}Mg{sub x}MnO{sub 3} (x = 0, 0.05 and 0.10) hexagonal compounds prepared by solid state method, have been studied. The structural analyses of the samples were carried out by Rietveld analysis of neutron diffraction data. With increasing Mg content, we find that the lattice parameter a decreases and c increases whereas the overall Mn-O bond length decreases. Magnetization measured as a function of magnetic field at 2.5 K exhibits hysteresis, which is attributed to ferromagnetic like ordering of Yb{sup 3+} sublattice. Temperature dependence of ac magnetic susceptibility, χ{sub ac}(T), shows no signature of spin-glass behavior. χ”(T) exhibits a sudden increase at low temperatures which is due to ordering of Yb{sup 3+} sublattice.
Authors:
; ; ; ;  [1] ; ;  [2]
  1. School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad-500046 (India)
  2. UGC-DAE Consortium for Scientific Research, Mumbai Centre, R-5 Shed, Bhabha Atomic Research Centre, Mumbai-400085 (India)
Publication Date:
OSTI Identifier:
22269412
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BOND LENGTHS; HYSTERESIS; LATTICE PARAMETERS; MAGNESIUM; MAGNETIC FIELDS; MAGNETIC SUSCEPTIBILITY; MAGNETIZATION; NEUTRON DIFFRACTION; POLYCRYSTALS; SOLIDS; SPIN GLASS STATE; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K; YTTERBIUM IONS