Slow spin relaxation and low-temperature spin freezing in the disordered fluorite Ho₂Zr₂O₇
We report on the origin of spin freezing in the disordered fluorite Ho₂Zr₂O₇. The system is investigated by low-temperature heat capacity as well as by dc and ac magnetization. While the system does not show a long-range magnetic order down to at least 𝑇=280 mK, we observe signatures of slow spin dy...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
7 August 2024
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| In: |
Physical review. B, Condensed matter and materials physics
Year: 2024, Volume: 110, Issue: 6, Pages: 064408-1-064408-7 |
| ISSN: | 1550-235X |
| DOI: | 10.1103/PhysRevB.110.064408 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevB.110.064408 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevB.110.064408 
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| Author Notes: | A. Elghandour, Sheetal, C.S. Yadav, R. Klingeler |
| Summary: | We report on the origin of spin freezing in the disordered fluorite Ho₂Zr₂O₇. The system is investigated by low-temperature heat capacity as well as by dc and ac magnetization. While the system does not show a long-range magnetic order down to at least 𝑇=280 mK, we observe signatures of slow spin dynamics, magnetic-field-induced relaxation processes at relatively high temperatures, and a spin-frozen state below 𝑇=0.6 K. Our results suggest that similar to the canonical spin-ice systems Ho₂Zr₂O₇ [J. Phys.: Condens. Matter 16, S635 (2004)] and Dy2Ti2O7 [Nature (London) 413, 48 (2001)], spin freezing in Ho₂Zr₂O₇ is preceded by two slow spin-relaxation processes; the first forms a field-induced region extending to at least 18 K and the second is rather field independent and appears at 𝑇g2=1 K [J. Ramón, Ph.D. thesis, Universidade de São Paulo (2020)]. |
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| Item Description: | Gesehen am 27.03.2025 |
| Physical Description: | Online Resource |
| ISSN: | 1550-235X |
| DOI: | 10.1103/PhysRevB.110.064408 |