Paper Title:
Phase Transformations in Nd2/3Ca1/3MnO3: Effect of Y Substitution
  Abstract

It was found that below the room temperature both parent Nd2/3Ca1/3MnO3 and doped (Nd0.9Y0.1)2/3Ca1/3MnO3 compounds exhibit a sequence of phase transformations: charge ordering, structural transformation of O-O type within the orthorhombic structure, and three magnetic transitions. Three different types of long-range magnetic order co-exist in (Nd0.9Y0.1)2/3Ca1/3MnO3 at low temperatures (as it was earlier found in Nd2/3Ca1/3MnO3): the antiferromagnetic orderings of PCE and DE types existing below ~110 K and ~60 K, respectively, and the ferromagnetic one of B type existing below ~42 K. Charge ordering occurs at 290 K in the doped compound. Diluting of Nd subsystem by Y in the parent perovskite has opposite effects on the temperatures of magnetic and charge orderings: the temperatures of all magnetic transformations are reduced in the doped compound by 20-30 K, while the charge ordering one increases by 80 K. A relationship between evolution of the phase transformation temperatures and crystal and electronic structures of the compound are analyzed.

  Info
Periodical
Solid State Phenomena (Volumes 152-153)
Edited by
N. Perov
Pages
108-111
DOI
10.4028/www.scientific.net/SSP.152-153.108
Citation
E. Fertman, A. Beznosov, V. Desnenko, M. Kajňaková, A. Feher, "Phase Transformations in Nd2/3Ca1/3MnO3: Effect of Y Substitution", Solid State Phenomena, Vols. 152-153, pp. 108-111, 2009
Online since
April 2009
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