Colossal Zero-Field-Cooled Exchange Bias via Tuning Compensated Ferrimagnetic in Kagome Metals

被引：2

作者：

Zhou, Haowei ^{[1
]}

Cao, Yili ^{[1
]}

Khmelevskyi, Sergii ^{[2
]}

Zhang, Qinghua ^{[3
]}

Hu, Shixin ^{[4
]}

Avdeev, Maxim ^{[5
,6
]}

Wang, Chin-Wei ^{[7
]}

Zhou, Rui ^{[3
]}

Yu, Chengyi ^{[1
]}

Chen, Xin ^{[1
]}

Li, Qiheng ^{[1
]}

Miao, Jun ^{[1
]}

Li, Qiang ^{[1
]}

Lin, Kun ^{[1
]}

Xing, Xianran ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Solid State Chem, Beijing Adv Innovat Ctr Mat Genome Engn, Beijing 100083, Peoples R China

[2] Vienna Univ Technol, Vienna Sci Cluster Res Ctr, A-1040 Vienna, Austria

[3] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[4] Lanzhou Univ, Inst Appl Magnet, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China

[5] Australian Nucl Sci & Technol Org, Lucas Heights, NSW 2234, Australia

[6] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

[7] Natl Synchrotron Radiat Res Ctr, Neutron Grp, Hsinchu 30076, Taiwan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2024年 / 146卷 / 30期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

FILMS; BEHAVIOR; GLASS;

D O I：

10.1021/jacs.4c04173

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Exchange bias (EB) is a crucial property with widespread applications but particularly occurs by complex interfacial magnetic interactions after field cooling. To date, intrinsic zero-field-cooled EB (ZEB) has only emerged in a few bulk frustrated systems and their magnitudes remain small yet. Here, enabled by high temperature synthesis, we uncover a colossal ZEB field of 4.95 kOe via tuning compensated ferrimagnetism in a family of kagome metals, which is almost twice the magnitude of known materials. Atomic-scale structure, spin dynamics, and magnetic theory revealed that these compensated ferrimagnets originate from significant antiferromagnetic exchange interactions embedded in the holmium-iron ferrimagnetic matrix due to supersaturated preferential manganese doping. A random antiferromagnetic order of manganese sublattice sandwiched between ferromagnetic iron kagome bilayers accounts for such unconventional pinning. The outcome of the present study outlines disorder-induced giant bulk ZEB and coercivity in layered frustrated systems.

引用

页码：20770 / 20777

页数：8