Low-temperature magnetic properties of the S=1/2 kagomé antiferromagnet YCo3(OH)6.55Br2.45

被引：0

作者：

Yu, Zhenwei ^{[1
]}

Liang, Hui ^{[2
]}

Wang, Yiyan ^{[2
]}

Li, Na ^{[2
]}

Sun, Yan ^{[2
]}

Wu, Dandan ^{[2
]}

Zhou, Ying ^{[2
]}

Ding, Zongling ^{[3
]}

Sun, Jin ^{[3
]}

He, Tianbo ^{[3
]}

Wu, Ziyang ^{[4
]}

Wang, Junfeng ^{[4
]}

Sun, Xuefeng ^{[2
]}

Li, Qiuju ^{[2
,3
]}

机构：

[1] Anhui Univ, Sch Mat Sci & Engn, Hefei 230601, Peoples R China

[2] Anhui Univ, Inst Phys Sci & Informat Technol, Anhui Key Lab Magnet Funct Mat & Devices, Hefei 230601, Peoples R China

[3] Anhui Univ, Sch Phys & Optoelect Engn, Hefei 230601, Peoples R China

[4] Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan, Hubei, Peoples R China

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2024年 / 36卷 / 49期

基金：

中国国家自然科学基金;

关键词：

kagom & eacute; -lattice antiferromagnet; YCo3(OH)(6.55)Br-2.45; hydrothermal method; magnetic transitions;

D O I：

10.1088/1361-648X/ad7434

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report the synthesis, crystal structure, magnetization and specific heat studies of YCo3(OH)(6.55)Br-2.45 single crystal. YCo3(OH)(6.55)Br-2.45 crystallizes in trigonal structure, in which Co2+ ions form a perfect kagom & eacute; lattice. The magnetic susceptibility reveals successive magnetic transitions at 6.5 and 7.8 K and the Curie-Weiss fitting demonstrates that YCo3(OH)(6.55)Br-2.45 has strong antiferromagnetic coupling and pronounced magnetic frustration effect. Specific heat data suggest that low-T magnetic transitions are attributed to antiferromagnetic ordering of Co2+ ions and the magnetic entropy points to effective 1/2 spin in the system. These results indicate that an unusual magnetic ordering state with effective spin-1/2 is realized in kagom & eacute; lattice system YCo3(OH)(6.55)Br-2.45.

引用

页数：8

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