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Title: Magnetic and dielectric behavior of the spin-chain compound Er₂BaNiO₅ well below its Néel temperature

Abstract

We have recently reported that the Haldane spin-chain system, Er₂BaNiO₅, undergoing antiferromagnetic order below (T{sub N}=) 32 K, is characterized by the onset of ferroelectricity near 60 K due to magnetoelectric coupling induced by short-range magnetic-order within spin-chains. We have carried out additional magnetic and dielectric studies to understand the properties well below T{sub N}. We emphasize here on the following: (i) A strong frequency dependent behaviors of ac magnetic susceptibility and complex dielectric properties have been observed at much lower temperatures (<8 K), that is, “reentrant multiglass-like” phenomenon, naturally suggesting the existence of an additional transition well below T{sub N}. (ii) “Magnetoelectric phase coexistence” is observed at very low temperature (e.g., T=2 K), where the high-field magnetoelectric phase is partially arrested on returning to zero magnetic field after a cycling through metamagnetic transition.

Authors:
; ;  [1];  [2]
  1. Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005 (India)
  2. School of Basic Sciences, Indian Institute of Technology Bhubaneshwar, Bhubaneshwar 751013 (India)
Publication Date:
OSTI Identifier:
22306008
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 116; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETISM; BARIUM COMPOUNDS; COUPLING; DIELECTRIC MATERIALS; DIELECTRIC PROPERTIES; ERBIUM COMPOUNDS; FREQUENCY DEPENDENCE; MAGNETIC FIELDS; MAGNETIC PROPERTIES; MAGNETIC SUSCEPTIBILITY; NEEL TEMPERATURE; NICKEL COMPOUNDS; OXYGEN COMPOUNDS; SPIN

Citation Formats

Basu, Tathamay, Singh, Kiran, Sampathkumaran, E. V., and Mohapatra, N. Magnetic and dielectric behavior of the spin-chain compound Er₂BaNiO₅ well below its Néel temperature. United States: N. p., 2014. Web. doi:10.1063/1.4896171.
Basu, Tathamay, Singh, Kiran, Sampathkumaran, E. V., & Mohapatra, N. Magnetic and dielectric behavior of the spin-chain compound Er₂BaNiO₅ well below its Néel temperature. United States. doi:10.1063/1.4896171.
Basu, Tathamay, Singh, Kiran, Sampathkumaran, E. V., and Mohapatra, N. Sun . "Magnetic and dielectric behavior of the spin-chain compound Er₂BaNiO₅ well below its Néel temperature". United States. doi:10.1063/1.4896171.
@article{osti_22306008,
title = {Magnetic and dielectric behavior of the spin-chain compound Er₂BaNiO₅ well below its Néel temperature},
author = {Basu, Tathamay and Singh, Kiran and Sampathkumaran, E. V. and Mohapatra, N.},
abstractNote = {We have recently reported that the Haldane spin-chain system, Er₂BaNiO₅, undergoing antiferromagnetic order below (T{sub N}=) 32 K, is characterized by the onset of ferroelectricity near 60 K due to magnetoelectric coupling induced by short-range magnetic-order within spin-chains. We have carried out additional magnetic and dielectric studies to understand the properties well below T{sub N}. We emphasize here on the following: (i) A strong frequency dependent behaviors of ac magnetic susceptibility and complex dielectric properties have been observed at much lower temperatures (<8 K), that is, “reentrant multiglass-like” phenomenon, naturally suggesting the existence of an additional transition well below T{sub N}. (ii) “Magnetoelectric phase coexistence” is observed at very low temperature (e.g., T=2 K), where the high-field magnetoelectric phase is partially arrested on returning to zero magnetic field after a cycling through metamagnetic transition.},
doi = {10.1063/1.4896171},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 11,
volume = 116,
place = {United States},
year = {2014},
month = {9}
}