Giant magnetothermal conductivity and magnetostriction effect in the charge ordered Nd0.8Na0.2MnO3 compound

We present results on resistivity (ρ), magnetization (M), thermal conductivity (κ), magnetostriction and specific heat (Cp) of the charge-orbital ordered antiferromagnetic Nd0.8Na0.2MnO3 compound. Magnetic-field-induced antiferromagnetic/charge-orbital ordered insulating to ferromagnetic metallic tr...

Full description

Saved in:
Bibliographic Details
Published in:Europhysics letters 2016-01, Vol.113 (1), p.17003
Main Authors: Samantaray, B., Khan, N., Midya, A., Ravi, S., Mandal, P.
Format: Article
Language:English
Subjects:
72.15.Gd
75.30.Kz
75.80.+q
Antiferromagnetism
Destabilization
Ferromagnetism
Jahn-Teller effect
Low temperature
Magnetostriction
Spin dynamics
Temperature dependence
Thermal conductivity
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We present results on resistivity (ρ), magnetization (M), thermal conductivity (κ), magnetostriction and specific heat (Cp) of the charge-orbital ordered antiferromagnetic Nd0.8Na0.2MnO3 compound. Magnetic-field-induced antiferromagnetic/charge-orbital ordered insulating to ferromagnetic metallic transition leads to giant magnetothermal conductivity and magnetostriction effect. The low-temperature irreversibility behavior in ρ, M, κ and due to field cycling together with a striking similarity among the field and temperature dependence of these parameters manifest the presence of a strong and complex spin-charge-lattice coupling in this compound. The giant magnetothermal conductivity is attributed mainly to the suppression of phonon scattering due to the destabilization of spin fluctuations and static/dynamic Jahn-Teller distortion by the application of magnetic field.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/113/17003