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Magnetic susceptibility and heat capacity measurements of single crystal TbMnO3
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O’Flynn, D., Lees, Martin R. and Balakrishnan, Geetha (2014) Magnetic susceptibility and heat capacity measurements of single crystal TbMnO3. Journal of Physics: Condensed Matter, Volume 26 (Number 25). Article number 256002. doi:10.1088/0953-8984/26/25/256002 ISSN 0953-8984.
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Official URL: http://dx.doi.org/10.1088/0953-8984/26/25/256002
Abstract
Measurements of the magnetic susceptibility χ and heat capacity C on single crystals of the multiferroic TbMnO3 are presented. A non-magnetic isostructural compound, LaGaO3, was used to isolate the magnetic component of the heat capacity. An anisotropic magnetic susceptibility, deviations from Curie-Weiss behaviour and a significant magnetic entropy above the antiferromagnetic ordering temperature TN1 = 41 K are attributed to a combination of crystal-field effects and short-range order between the Mn moments. Heat capacity in a magnetic field applied along the a axis confirms the saturation of Tb3+ moments in 90 kOe. A hyperfine contribution from the Tb and Mn nuclear moments that may be convolved with a contribution from low-lying Tb crystal-field levels leads to a low-temperature rise in C(T)/T.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
Journal or Publication Title: | Journal of Physics: Condensed Matter | ||||||||
Publisher: | Institute of Physics Publishing Ltd. | ||||||||
ISSN: | 0953-8984 | ||||||||
Official Date: | 27 May 2014 | ||||||||
Dates: |
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Volume: | Volume 26 | ||||||||
Number: | Number 25 | ||||||||
Article Number: | Article number 256002 | ||||||||
DOI: | 10.1088/0953-8984/26/25/256002 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access |
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