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Data for Tracking a hysteretic and disorder-broadened phase transition via the electromagnon response in improper ferroelectrics
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Mosley, C. D. W., Prabhakaran, Dharmalingam and Lloyd-Hughes, James (2018) Data for Tracking a hysteretic and disorder-broadened phase transition via the electromagnon response in improper ferroelectrics. [Dataset]
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WRAP_Lloyd-Hughes_JournalofPhysicsD_dataset.zip - Published Version Available under License Creative Commons Attribution 4.0. Download (54Kb) |
Official URL: https://wrap.warwick.ac.uk/99217/
Abstract
We demonstrate that electromagnons can be used to directly probe the nature of a phase transition between magnetically ordered phases in an improper ferroelectric. The antiferromagnetic/paraelectric to antiferromagnetic/ferroelectric phase transition in Cu<sub>1-x</sub>Zn<sub>x</sub>O (x=0, 0.05) alloys was tracked via the electromagnon response using terahertz time-domain spectroscopy, on heating and cooling through the phase transition. The transition was found to exhibit thermal hysteresis, confirming its first-order nature, and to broaden under the influence of spin-disorder upon Zn substitution. The energy of the electromagnon increases upon alloying, as a result of the non-magnetic ions modifying the magnetic interactions that give rise to the multiferroic phase and electromagnons. We describe our findings in the context of recent theoretical work that examined improper ferroelectricity and electromagnons in CuO from phenomenological and first-principles approaches.
| Item Type: | Dataset | ||||||
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| Subjects: | Q Science > QC Physics | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
| Type of Data: | Experimental data | ||||||
| Library of Congress Subject Headings (LCSH): | Ferromagnetism, Ferroelectricity, Phase transformations (Statistical physics) | ||||||
| Publisher: | University of Warwick, Department of Physics | ||||||
| Official Date: | 22 February 2018 | ||||||
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| Status: | Not Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Media of Output (format): | .txt | ||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||
| Description: | Data files for figures 1, 2, 3, 4 in paper |
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| Date of first compliant deposit: | 22 February 2018 | ||||||
| Date of first compliant Open Access: | 22 February 2018 | ||||||
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