High magneto-mechanical hysteresis-type damping in FeGaMo alloys

doi:10.1016/j.jallcom.2023.172233

	High magneto-mechanical hysteresis-type damping in FeGaMo alloys
	Liu, X. Q.4,5; Sun, M.5; Liu, J. X.4,5; Wang, X. G.4,5; Ke, Y. B.2,3; Jiang, W. B.5; Gao, Y. X.1; Wang, X. P.5; Fang, Q. F.5
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2023-12-15
卷号	968
关键词	Damping FeGaMo alloys Magnetic domains Coercivity Magnetostriction
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2023.172233
通讯作者	Sun, M.(mengsun@issp.ac.cn) ; Fang, Q. F.(qffang@issp.ac)
英文摘要	Optimization of the damping capacity of conventional FeCr-based ferromagnetic high damping alloys (HDAs) usually involves a trade-off in terms of degradation of mechanical properties due to grain coarsening caused by high-temperature annealing. In this work, new ferromagnetic HDAs of FeGaMo alloys with different Mo contents are reported, which can exhibit high damping when treated in a medium temperature range. Among these alloys, the alloy with Mo content of 2 at% exhibits the best damping capacity of 4.20 x 10-2 (Q-1, equivalent to a special damping capacity SDC of 0.26). It is found that the Mo element has a high solid solubility in the FeGa alloy, and when the Mo content is 2 at%, only isolated tiny precipitations are observed in the matrix. These small precipitates have a negligible effect on hindering domain motion, and the corresponding coercivity change is extremely weak compared to the Mo-free FeGa alloy. As the Mo content increases to 4 at% or 6 at%, Mo-rich phases precipitate within the grains and along the grain boundaries, resulting in an increasing coercivity. Interestingly, as the Mo content increases, the domain density in the (001) and (110) surfaces gradually increases and the arrangement of magnetic domains becomes more tortuous due to the decrease in the magnetocrystalline anisotropy constant. For the FeGaMo alloy with 2 at% Mo content, the high damping capacity mainly arises from the energy loss caused by the high density of irreversible motion of domain walls (DWs) under the applied stress, and as the Mo content continues to increase, the significant precipitation of Mo-rich phases severely restricts the movement distance of DWs, leading to a decrease in damping. This work provides valuable insights for the design and research of new ferromagnetic high damping materials in the future.
资助项目	Research Program of the Chinese Academy of Sciences[XDB0470000] ; Anhui Provincial Key RD Program[202104a05020027] ; Anhui Provincial Natural Science Foundation[2108085QE184] ; Anhui Provincial Postdoctoral Science Foundation[2022000096] ; HFIPS Director's Fund[YZJJ202206-CX] ; Large Scientific Facility Open Subject of Songshan Lake, Dongguan, Guangdong
WOS关键词	FE-CR ; HEAT-TREATMENT ; CAPACITY ; AL ; VIBRATION ; BEHAVIOR ; GA ; MAGNETOSTRICTION ; DEPENDENCE
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:001082314500001
资助机构	Research Program of the Chinese Academy of Sciences ; Anhui Provincial Key RD Program ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Postdoctoral Science Foundation ; HFIPS Director's Fund ; Large Scientific Facility Open Subject of Songshan Lake, Dongguan, Guangdong
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/133333]
专题	中国科学院合肥物质科学研究院
通讯作者	Sun, M.; Fang, Q. F.
作者单位	1.North China Elect Power Univ, Math & Phys Dept, Beijing 102206, Peoples R China 2.Inst High Energy Phys, Chinese Acad Sci, Beijing 10049, Peoples R China 3.China Spallat Neutron Source, Spallat Neutron Source Sci Ctr, Dongguan 523803, Peoples R China 4.Univ Sci & Technol China, Hefei 230026, Peoples R China 5.Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, HFIPS, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Liu, X. Q.,Sun, M.,Liu, J. X.,et al. High magneto-mechanical hysteresis-type damping in FeGaMo alloys[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,968.
APA	Liu, X. Q..,Sun, M..,Liu, J. X..,Wang, X. G..,Ke, Y. B..,...&Fang, Q. F..(2023).High magneto-mechanical hysteresis-type damping in FeGaMo alloys.JOURNAL OF ALLOYS AND COMPOUNDS,968.
MLA	Liu, X. Q.,et al."High magneto-mechanical hysteresis-type damping in FeGaMo alloys".JOURNAL OF ALLOYS AND COMPOUNDS 968(2023).