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

Journal Article · Sun Sep 21 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4896171· OSTI ID:22306008

Basu, Tathamay; Singh, Kiran; Sampathkumaran, E. V. ^[1]; Mohapatra, N. ^[2]

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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)

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.

• OSTI ID: 22306008
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

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