Magnetic properties of a Pt/Co2FeAl/MgO structure with perpendicular magnetic anisotropy

doi:10.1088/1674-1056/21/10/107307

Abstract Microstructures and magnetic properties of Ta/Pt/Co₂FeAl (CFA)/MgO multilayers are studied to understand perpendicular magnetic anisotropy (PMA) of half-metallic full-Heusler alloy films. PMA is realized in a 2.5-nm CFA film with B2-ordered structure observed by a high resolution transmission electron microscope. It is demonstrated that a high quality interface between the ferromagnetic layer and oxide layer is not essential for PMA. The conversions between in-plane anisotropy and PMA are investigated to study the dependence of magnetic moment on temperature. At the intersection points, the decreasing slope of the saturation magnetization (M_s) changes because of the conversions. The dependence of M_s on the annealing temperature and MgO thickness is also studied.

Keywords: half-metallic perpendicular magnetic anisotropy

Received: 24 April 2012
Revised: 15 May 2012
Accepted manuscript online:

PACS:	73.43.Qt	(Magnetoresistance)
	72.25.Ba	(Spin polarized transport in metals)
	68.35.Ct	(Interface structure and roughness)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 50831002, 50971025, 51071022, and 11174031), the National Basic Research Program of China (Grant No. 2012CB932702), the Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT), the Beijing Nova Program (Grant No. 2011031), the Beijing Municipal Natural Science Foundation, China (Grant No. 2102032), and the Fundamental Research Funds for the Central Universities.

Corresponding Authors: Xu Xiao-Guang
E-mail: xgxu@ustb.edu.cn

Cite this article:

Li Xiao-Qi (李晓其), Xu Xiao-Guang (徐晓光), Wang Sheng (王圣), Wu Yong (吴勇), Zhang De-Lin (张德林), Miao Jun (苗军), Jiang Yong (姜勇) Magnetic properties of a Pt/Co₂FeAl/MgO structure with perpendicular magnetic anisotropy 2012 Chin. Phys. B 21 107307

[1]	Moodera J S, Kinder L R, Wong T M and Meservey R 1995 Phys. Rev. Lett. 74 3273
[2]	Miyazaki T and Tezuka N 1995 J. Magn. Magn. Mater. 139 L231
[3]	Mathon J and Umerski A 2001 Phys. Rev. B 63 220403
[4]	Parkin S S P, Kaiser C, Panchula A, Rice P M, Hughes B, Samant M and Yang S H 2004 Nature Mater. 3 862
[5]	Yuasa S, Nagahama T, Fukushima A, Suzuki Y and Ando K 2004 Nature Mater. 3 868
[6]	Ikeda S, Hayakawa J, Ashizawa Y, Lee Y M, Miura K, Hasegawa H, Tsunoda M, Matsukura F and Ohno H 2008 Appl. Phys. Lett. 93 082508
[7]	Julliére M 1975 Phys. Lett. A 54 225
[8]	Wang W H, Liu E K, Kodzuka M, Sukegawa H, Wojcik M, Jedryka E, Wu G H, Inomata K, Mitani S and Hono K 2010 Phys. Rev. B 81 140402
[9]	Wang W H, Sukegawa H, Shan R, Mitani S and Inomata K 2009 Appl. Phys. Lett. 95 182502
[10]	Xu G L, Chen J D, Chen D, Ma J Z, Yu B H and Shi D H 2009 Chin. Phys. B 18 744
[11]	Li G N, Jin Y J and Lee J I 2010 Chin. Phys. B 19 097102
[12]	Wen Z C, Sukegawa H, Mitani S and Inomata K 2011 Appl. Phys. Lett. 98 192505
[13]	Shuto Y, Nakane R, Wang W H, Sukegawa H, Yamamoto S, Tanaka M, Inomata K and Sugahara1 S 2010 Appl. Phys. Express 3 013003
[14]	Balke B, Wurmehl S, Fecher G, Felser C and Kübler J 2008 Sci. Technol. Adv. Mater. 9 014102
[15]	Picozzi S, Continenza A and Freeman A J 2002 Phys. Rev. B 66 094421
[16]	Galanakis, Dederichs P H and Papanikolaou N 2002 Phys. Rev. B 66 174429
[17]	Wang W H, Sukegawa H and Inomata K 2010 Appl. Phys. Express 3 093002
[18]	Wen Z C, Sukegawa H, Mitani S and Inomata K 2011 Appl. Phys. Lett. 98 242507
[19]	Li X Q, Xu X G, Zhang D L, Miao J, Zhan Q, Jalil M B A, Yu G H and Jiang Y 2010 Appl. Phys. Lett. 96 142505
[20]	Li X Q, Yin S Q, Liu Y P, Zhang D L, Xu X G, Miao J and Jiang Y 2011 Appl. Phys. Express 4 043006
[21]	Nistor L E, Rodmacq B, Auffret S and Dieny B 2009 Appl. Phys. Lett. 94 012512
[22]	Xu X G, Zhang D L, Li X Q, Bao J, Jiang Y and Jalil M B A 2009 J. Appl. Phys. 106 123902
[23]	Kobayashi K, Umetsu R Y, Kainuma R, Ishida K, Oyamada T, Fujita A and Fukamichi K 2004 Appl. Phys. Lett. 85 4684
[24]	Kurt H, Venkatesan M and Coey J M D 2010 J. Appl. Phys. 108 073916
[25]	Bordel C, Pizzini S, Vogel J, Mackay K, Voiron J, Galéra R M, Fontaine A, Auric P, Goedkoop J B and Brookes N B 1997 Phys. Rev. B 56 8149
[26]	Tezuka N, Ikeda N, Miyazaki A, Sugimoto S, Kikuchi M and Inomata K 2006 Appl. Phys. Lett. 89 112514
[27]	Gabor M S, Petrisor T Jr, Tiusan C, Hehn M and Petrisor T 2011 Phys. Rev. B 84 134413

[1]	High repetition granular Co/Pt multilayers with improved perpendicular remanent magnetization for high-density magnetic recording Zhi Li(李智), Kun Zhang(张昆), Ao Du(杜奥), Hongchao Zhang(张洪超), Weibin Chen(陈伟斌), Ning Xu(徐宁), Runrun Hao(郝润润), Shishen Yan(颜世申), Weisheng Zhao(赵巍胜), and Qunwen Leng(冷群文). Chin. Phys. B, 2023, 32(2): 026803.
[2]	Thickness-dependent magnetic properties in Pt/[Co/Ni]_n multilayers with perpendicular magnetic anisotropy Chunjie Yan(晏春杰), Lina Chen(陈丽娜), Kaiyuan Zhou(周恺元), Liupeng Yang(杨留鹏), Qingwei Fu(付清为), Wenqiang Wang(王文强), Wen-Cheng Yue(岳文诚), Like Liang(梁力克), Zui Tao(陶醉), Jun Du(杜军),Yong-Lei Wang(王永磊), and Ronghua Liu(刘荣华). Chin. Phys. B, 2023, 32(1): 017503.
[3]	The 50 nm-thick yttrium iron garnet films with perpendicular magnetic anisotropy Shuyao Chen(陈姝瑶), Yunfei Xie(谢云飞), Yucong Yang(杨玉聪), Dong Gao(高栋), Donghua Liu(刘冬华), Lin Qin(秦林), Wei Yan(严巍), Bi Tan(谭碧), Qiuli Chen(陈秋丽), Tao Gong(龚涛), En Li(李恩), Lei Bi(毕磊), Tao Liu(刘涛), and Longjiang Deng(邓龙江). Chin. Phys. B, 2022, 31(4): 048503.
[4]	Perpendicular magnetization and exchange bias in epitaxial NiO/[Ni/Pt]₂ multilayers Lin-Ao Huang(黄林傲), Mei-Yu Wang(王梅雨), Peng Wang(王鹏), Yuan Yuan(袁源), Ruo-Bai Liu(刘若柏), Tian-Yu Liu(刘天宇), Yu Lu(卢羽), Jia-Rui Chen(陈家瑞), Lu-Jun Wei(魏陆军), Wei Zhang(张维), Biao You(游彪), Qing-Yu Xu(徐庆宇), and Jun Du(杜军). Chin. Phys. B, 2022, 31(2): 027506.
[5]	Perpendicular magnetic anisotropy of Pd/Co₂MnSi/NiFe₂O₄/Pd multilayers on F-mica substrates Qingwang Bai(白青旺), Bin Guo(郭斌), Qin Yin(尹钦), and Shuyun Wang(王书运). Chin. Phys. B, 2022, 31(1): 017501.
[6]	Optimized growth of compensated ferrimagnetic insulator Gd₃Fe₅O₁₂ with a perpendicular magnetic anisotropy Heng-An Zhou(周恒安), Li Cai(蔡立), Teng Xu(许腾), Yonggang Zhao(赵永刚), and Wanjun Jiang(江万军). Chin. Phys. B, 2021, 30(9): 097503.
[7]	Ultra-low Young's modulus and high super-exchange interactions in monolayer CrN: A promising candidate for flexible spintronic applications Yang Song(宋洋), Yan-Fang Zhang(张艳芳), Jinbo Pan(潘金波), and Shixuan Du(杜世萱). Chin. Phys. B, 2021, 30(4): 047105.
[8]	A first-principles study on zigzag phosphorene nanoribbons terminated by transition metal atoms Shuai Yang(杨帅), Zhiyong Wang(王志勇), Xueqiong Dai(戴学琼), Jianrong Xiao(肖剑荣), and Mengqiu Long(龙孟秋). Chin. Phys. B, 2021, 30(2): 027305.
[9]	RF magnetron sputtering induced the perpendicular magnetic anisotropy modification in Pt/Co based multilayers Runze Li(李润泽), Yucai Li(李予才), Yu Sheng(盛宇), and Kaiyou Wang(王开友). Chin. Phys. B, 2021, 30(2): 028506.
[10]	Magnetic anisotropy manipulation and interfacial coupling in Sm₃Fe₅O₁₂ films and CoFe/Sm₃Fe₅O₁₂ heterostructures Lei Shen(沈磊), Guanjie Wu(武冠杰), Tao Sun(孙韬), Zhi Meng(孟智), Chun Zhou(周春), Wenyi Liu(刘文怡), Kang Qiu(邱康), Zongwei Ma(马宗伟), Haoliang Huang(黄浩亮), Yalin Lu(陆亚林), Zongzhi Zhang(张宗芝), and Zhigao Sheng(盛志高). Chin. Phys. B, 2021, 30(12): 127502.
[11]	Exploring ferromagnetic half-metallic nature of Cs₂NpBr₆ via spin polarized density functional theory Malak Azmat Ali, G Murtaza, A Laref. Chin. Phys. B, 2020, 29(6): 066102.
[12]	Surface states modulated exchange interaction in Bi₂Se₃/thulium iron garnet heterostructures Hai-Bin Shi(石海滨), Li-Qin Yan(闫丽琴), Yang-Tao Su(苏仰涛), Li Wang(王力), Xin-Yu Cao(曹昕宇), Lin-Zhu Bi(毕林竹), Yang Meng(孟洋), Yang Sun(孙阳), and Hong-Wu Zhao(赵宏武). Chin. Phys. B, 2020, 29(11): 117302.
[13]	Electrically tunable spin diode effect in a tunneling junction of quantum dot Xukai Peng(彭许凯), Zhengzhong Zhang(张正中). Chin. Phys. B, 2019, 28(12): 127202.
[14]	Dependence of switching process on the perpendicular magnetic anisotropy constant in P-MTJ Mao-Sen Yang(杨茂森), Liang Fang(方粮), Ya-Qing Chi(池雅庆). Chin. Phys. B, 2018, 27(9): 098504.
[15]	Electronic and mechanical properties of half-metallic half-Heusler compounds CoCrZ (Z=S, Se, and Te) Hai-Ming Huang(黄海铭), Chuan-Kun Zhang(张传坤), Ze-Dong He(贺泽东), Jun Zhang(张俊), Jun-Tao Yang(杨俊涛), Shi-Jun Luo(罗时军). Chin. Phys. B, 2018, 27(1): 017103.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

Magnetic properties of a Pt/Co2FeAl/MgO structure with perpendicular magnetic anisotropy

Cite this article:

Online attention

Magnetic properties of a Pt/Co₂FeAl/MgO structure with perpendicular magnetic anisotropy