Slow spin relaxation and low-temperature spin freezing in the disordered fluorite Ho2Zr2O7

被引：2
|
作者：
Elghandour, A. [1 ]
Sheetal [2 ,3 ]
Yadav, C. S. [2 ]
Klingeler, R. [1 ,3 ]
机构：
[1] Heidelberg Univ, Kirchhoff Inst Phys, INF 227, D-69120 Heidelberg, Germany
[2] Indian Inst Technol Mandi, Sch Phys Sci, Kamand 175075, HP, India
[3] Forschungszentrum Julich, Julich Ctr Neutron Sci JCNS 4, Heinz Maier Leibnitz Zentrum MLZ, Lichtenbergstr 1, D-85747 Garching, Germany
来源：
PHYSICAL REVIEW B | 2024年 / 110卷 / 06期
关键词：
MAGNETIC-PROPERTIES; ICE; LIQUID; FRUSTRATION; MODEL;
D O I：
10.1103/PhysRevB.110.064408
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the origin of spin freezing in the disordered fluorite Ho2Zr2O7. The system is investigated by lowtemperature 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-fieldinduced 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 Ho2Ti2O7 [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. Ram & oacute;n, Ph.D. thesis, Universidade de S & atilde;o Paulo (2020)].
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页数：7
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