Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 300, Issue 1, Pages E130-E133Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2005.10.165
Keywords
Multiferroic; Incommensurate magnetic structure; Electric polarization; Manganites; Field-induced transition
Funding
- Russian Foundation for Basic Research [04-02-16592, 03-02-16445, 03-02-16759, 04-02-81046-Bel2004]
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Multiferroic ground states with a spatially modulated antiferromagnetic structure and electric polarization have been revealed in Eu1-xYxMnO3 (0.2 <= x <= 0.5) single crystals. While the slightly substituted (x <= 0.1) compounds exhibited a transition from the incommensurate (IC) to the canted antiferromagnetic (CAF) state at T-CA < T-N, the transitions from IC to commensurate ferroelectric (C/FE) phase were observed at T-lock < T-N for x>0.2. Various phase transitions were observed in the magnetic fields up to 250 kOe along a, b, c axes by magnetization, magnetostriction and electric polarization measurements which show an existence of a spontaneous electric polarization below T-lock. (C) 2005 Elsevier B.V. All rights reserved.
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