Магнітооптичне дослідження індукованого магнітним полем спін-орієнтаційного фазового переходу у монокристалі NdFe3(BO3)4
The magnetic field dependences of birefringence in a NdFe3(BO3)4 single crystal have been measured in the case where the direction of light propagation coincides with the trigonal crystal axis C3 (k ║ C3), and the external magnetic field is oriented along the second-order axis C2 (H&nbs...
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| Date: | 2012 |
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| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
| Published: |
Publishing house "Academperiodika"
2012
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| Subjects: | |
| Online Access: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2021248 |
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| Journal Title: | Ukrainian Journal of Physics |
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Ukrainian Journal of Physics| Summary: | The magnetic field dependences of birefringence in a NdFe3(BO3)4 single crystal have been measured in the case where the direction of light propagation coincides with the trigonal crystal axis C3 (k ║ C3), and the external magnetic field is oriented along the second-order axis C2 (H ║ C2). In the temperature range, in which an incommensurate phase exists with the formation of a long-period antiferromagnetic helix, the strongly pronounced jumps in the field dependence of birefringence are revealed and identified as a first-order spin-orientation phase transition. The phase transition was accompanied by a hysteresis in the field dependences of birefringence. The H–T phase diagram for a NdFe3(BO3)4 single crystal has been plotted in the case where the magnetic field is oriented along the crystal axis C2 (H ║ C2). |
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