Effect of Annealing Temperature on the Microstructure and Magnetic Properties of MnGa Films

被引:3
作者
Cheng, Weiming [1 ,2 ]
Jiang, Shize [1 ,2 ]
Xu, Wenchao [1 ,2 ]
Hui, Yajuan [1 ,2 ]
Wang, Haiwei [2 ]
Chen, Jincai [2 ]
Miao, Xiangshui [1 ,2 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
基金
中国国家自然科学基金;
关键词
MnGa; Sputtering; Annealing; Magnetic properties; Microstructure;
D O I
10.1007/s10948-016-3506-2
中图分类号
O59 [应用物理学];
学科分类号
摘要
MnGa films are the promising magnetic recording materials and spintronic materials owing to their intrinsic properties, such as large magnetic anisotropy, high coercivity, moderate magnetization, and high spin polarization. In this paper, MnGa films with high coercivity and low surface roughness have been successfully fabricated onto MgO substrates by magnetron sputtering and post-annealing. Moreover, the effects of post-annealing temperature (T (a)) on crystalline structure, surface morphology, and magnetic performances of MnGa films have also been investigated. It is found that the crystallization temperature for MnGa films is 400 C-a similar to. With increasing T (a), the crystallization degree enhances and an in-plane texture is formed. The grain size and surface roughness of MnGa films increase slowly when T (a) is below 500 C-a similar to, but they exhibit a rapid rise when T (a) is above 500 C-a similar to. As T (a) increases, the coercivity (H (c)) and remanence squareness ratio (S) for MnGa films improve monotonically, whereas saturation magnetization (M (s)) increases firstly and then drops. The increases in H (c), S, and M (s) with T (a) are attributed to the grains' growth and the improvement of crystallinity, and the decrease of M (s) at higher T (a) possibly is due to the partial oxidation of Mn.
引用
收藏
页码:2035 / 2039
页数:5
相关论文
共 50 条
[41]   Effects of sputtering parameters and annealing temperatures on magnetic properties of CoFeB films [J].
Xu, Zhangliang ;
Qin, Lei .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2021, 538
[42]   Effect of annealing on the magnetic properties of zinc ferrite thin films [J].
Kumar, Yogesh ;
Lorite, Israel ;
Lorenz, Michael ;
Esquinazi, Pablo ;
Grundmann, Marius .
MATERIALS LETTERS, 2017, 195 :89-91
[43]   Annealing Temperature Dependent on Microstructure and Ethanol Gas Sensing Properties of TiO2Thin Films [J].
Samransuksamer, Benjarong ;
Rakreungdet, Worawarong ;
Dumrongrattana, Supattanapong ;
Horprathum, Mati ;
Eiamchai, Pitak ;
Patthanasettakul, Viyapol ;
Wisitsoraat, Anurat ;
Chindaudom, Pongpan .
APPLIED PHYSICS AND MATERIAL APPLICATIONS, 2013, 770 :213-+
[44]   Effect of annealing temperature on the optoelectronic properties and structure of NiO films [J].
Li, Ming-Chen ;
Dai, Ming-Jiang ;
Lin, Song-Sheng ;
Chen, Sheng-Chi ;
Xu, Jing ;
Liu, Xiu-Lan ;
Wu, En-Hui ;
Ding, An-Ning ;
Gong, Jian-Hong ;
Sun, Hui .
CERAMICS INTERNATIONAL, 2022, 48 (02) :2820-2825
[45]   Effect of annealing temperature on properties of sputtered PZT thin films [J].
Zhu, Yi-Ping ;
Ren, Tian-Ling ;
Zhang, Ning-Xin ;
Liu, Li-Tian ;
Li, Zhi-Jian .
INTEGRATED FERROELECTRICS, 2007, 90 :3-11
[46]   Effect of second annealing on magnetic properties and microstructure of (NdDy)FeCoCuB magnets [J].
Wang, W ;
Luo, W ;
Wen, YH ;
Yu, LQ ;
Yan, M .
RARE METAL MATERIALS AND ENGINEERING, 2005, 34 (10) :1633-1636
[47]   Influence of silicon substitution and annealing temperature on the microstructure and magnetic properties of lithium ferrite [J].
Mazen, S. A. ;
Abu-Elsaad, N. I. ;
Nawara, A. S. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 648 :690-697
[48]   Effect of the Annealing Temperature on the Microstructure and Properties of Ausferritic Nodular Cast Iron [J].
Gumienny, G. ;
Klimek, L. ;
Kurowska, B. .
ARCHIVES OF FOUNDRY ENGINEERING, 2016, 16 (03) :43-48
[49]   Effect of the Sputtering Power Density on Microstructure and Magnetic Properties of CoFeSiB Thin Films [J].
Grigoras, M. ;
Lupu, N. ;
Chiriac, H. .
IEEE TRANSACTIONS ON MAGNETICS, 2011, 47 (10) :3886-3888
[50]   Effect of transverse magnetic field annealing on the magnetic properties and microstructure of FeSiBNbCuP nanocrystalline alloys [J].
Ding, Qian ;
Li, Jiawei ;
Zhang, Ruiheng ;
He, Aina ;
Dong, Yaqiang ;
Sun, Yu ;
Zheng, Junwei ;
Li, Xubin ;
Liu, Xincai .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2022, 560