Neutron depolarization measurements on HgCr₂Se₄ under pressure
- Date
- Oct 25, 2022
- Time
- 2:50 PM - 4:20 PM
- Speaker
- Pau Jorba Cabré
- Affiliation
- Kiutra GmbH
- Language
- en
- Main Topic
- Physik
- Other Topics
- Physik
- Host
- D. Peets
- Description
Abstract:
To probe the dependence of the magnetic interactions on structure and atomic distances, the pressure dependent magnetic phase diagram of chromium spinel HgCr₂Se₄ was investigated. The pressure was applied with purposely built diamond anvil cells. The magnetic state of the samples was probed by neutron depolarization, where a pair of focusing neutron supermirror guides was used, increasing the signal intensity by a factor 20. Given the strong competition between FM and AFM exchange in HgCr₂Se₄ and parent compounds, the different ground states and physical phenomena observed are likely a consequence of complex coupling of structural distortions with the magnetic degrees of freedom.
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Last modified: Oct 25, 2022, 12:08:14 AM
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