Vertical strain tuning and perpendicular magnetic anisotropy in La0.5Ca0.5MnO3 vertically aligned nanostructured thin films by the application of high magnetic fields

doi:10.1016/j.jallcom.2021.161511

	Vertical strain tuning and perpendicular magnetic anisotropy in La0.5Ca0.5MnO3 vertically aligned nanostructured thin films by the application of high magnetic fields
	Zhang, Kejun 1; Dai, Jianming 2; Zhu, Xuebin 2; Tian, Yuan 1; Chen, Liangzhe 1; Sun, Yuping 2,3
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2021-12-25
卷号	888
关键词	Nanostructured materials Thin films High magnetic fields Grain boundaries Magnetic measurements
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2021.161511
通讯作者	Zhu, Xuebin(xbzhu@issp.ac.cn) ; Tian, Yuan(675479696@qq.com)
英文摘要	Epitaxial La0.5Ca0.5MnO3 (LCMO) thin films with vertically aligned nanostructures (VANs) have been achieved with the application of high magnetic fields in pulsed laser deposition processing. More interestingly, the microstructures, vertical strain, and perpendicular magnetic anisotropy (PMA) in the LCMO VAN films can be systematically manipulated by changing the applied high magnetic field strength. With increasing the high magnetic field, an increase in growth rate and a decrease in nanocolumn dimension are observed in the LCMO VAN films, which can be attributed to the enhanced suppression effect on adatom mobility and surface diffusion. Different from the LCMO planar-structured films, the intrinsic stress behaviors associated with vertical interfaces and grain boundaries instead of substrate strain in the LCMO VAN films are dominant in vertical strain evolution, indicating an out-of-plane compressive state, which is highly correlated with the growth rate and nanocolumn dimension. A core-shell model based on phase separation is proposed to understand the nanoscale size effect on magnetic properties in the LCMO VAN films. A tunable and enhanced PMA effect in the LCMO VAN films is also demonstrated. The results suggest that the application of a high magnetic field in pulsed laser deposition processing is a practicable route to achieve tunable VANs, and manipulate physical properties in manganite films. (C) 2021 Elsevier B.V. All rights reserved.
资助项目	Nature Science Foundation of Hubei Province[2020CFB559] ; Scientific Research Project of Hubei Education Department[Q20204306] ; Scientific Research Project of Hubei Education Department[Q20204302] ; Science Foundation Project of Jingmen Science and Technology Bureau[2018YFYB051] ; Science Foundation Project of Jingchu University of Technology[YY201701]
WOS关键词	INTRINSIC STRESSES ; COLUMNAR GROWTH ; EXCHANGE BIAS ; INTERFACE ; MICROSTRUCTURE ; MODEL
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:000704789800002
资助机构	Nature Science Foundation of Hubei Province ; Scientific Research Project of Hubei Education Department ; Science Foundation Project of Jingmen Science and Technology Bureau ; Science Foundation Project of Jingchu University of Technology
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125507]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhu, Xuebin; Tian, Yuan
作者单位	1.Jingchu Univ Technol, Jingmen 448000, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Kejun,Dai, Jianming,Zhu, Xuebin,et al. Vertical strain tuning and perpendicular magnetic anisotropy in La0.5Ca0.5MnO3 vertically aligned nanostructured thin films by the application of high magnetic fields[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,888.
APA	Zhang, Kejun,Dai, Jianming,Zhu, Xuebin,Tian, Yuan,Chen, Liangzhe,&Sun, Yuping.(2021).Vertical strain tuning and perpendicular magnetic anisotropy in La0.5Ca0.5MnO3 vertically aligned nanostructured thin films by the application of high magnetic fields.JOURNAL OF ALLOYS AND COMPOUNDS,888.
MLA	Zhang, Kejun,et al."Vertical strain tuning and perpendicular magnetic anisotropy in La0.5Ca0.5MnO3 vertically aligned nanostructured thin films by the application of high magnetic fields".JOURNAL OF ALLOYS AND COMPOUNDS 888(2021).