Please wait a minute...
Chin. Phys. B, 2016, Vol. 25(9): 097501    DOI: 10.1088/1674-1056/25/9/097501
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Manipulating magnetic anisotropies of Co/MgO(001) ultrathin films via oblique deposition

Syed Sheraz Ahmad, Wei He(何为), Jin Tang(汤进), Yong Sheng Zhang(张永圣), Bo Hu(胡泊), Jun Ye(叶军), Qeemat Gul, Xiang-Qun Zhang(张向群), Zhao-Hua Cheng(成昭华)
State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Abstract  

We present a systematic investigation of magnetic anisotropy induced by oblique deposition of Co thin films on MgO (001) substrates by molecular beam epitaxy at different deposition angles, i.e., 0°, 30°, 45°, 60°, and 75° with respect to the surface normal. Low energy electron diffraction (LEED), surface magneto-optical Kerr effect (SMOKE), and anisotropic magnetoresistance (AMR) setups were employed to investigate the magnetic properties of cobalt films. The values of in-plane uniaxial magnetic anisotropy (UMA) constant Ku and four-fold magnetocrystalline anisotropy constant K1 were derived from magnetic torque curves on the base of AMR results. It was found that the value of Ku increases with increasing deposition angle with respect to the surface normal, while the value of K1 remains almost constant for all the samples. Furthermore, by using MOKE results, the Ku values of the films deposited obliquely were also derived from the magnetization curves along hard axis. The results of AMR method were then compared with that of hard axis fitting method (coherent rotation) and found that both methods have almost identical values of UMA constant for each sample.

Keywords:  magnetic anisotropy      oblique deposition      cobalt ultrathin film      anisotropic magnetoresistance  
Received:  23 May 2016      Revised:  27 June 2016      Accepted manuscript online: 
PACS:  75.30.Gw (Magnetic anisotropy)  
  75.60.Jk (Magnetization reversal mechanisms)  
  75.70.Ak (Magnetic properties of monolayers and thin films)  
Fund: 

Project supported by the Chinese Academy of Sciences-The World Academy of Sciences (CAS-TWAS) Fellowship Program, the National Basic Research Program of China (Grant Nos. 2015CB921403 and 2012CB933102), and the National Natural Science Foundation of China (Grant Nos. 51427801, 11374350, and 11274361).

Corresponding Authors:  Zhao-Hua Cheng     E-mail:  zhcheng@iphy.ac.cn

Cite this article: 

Syed Sheraz Ahmad, Wei He(何为), Jin Tang(汤进), Yong Sheng Zhang(张永圣), Bo Hu(胡泊), Jun Ye(叶军), Qeemat Gul, Xiang-Qun Zhang(张向群), Zhao-Hua Cheng(成昭华) Manipulating magnetic anisotropies of Co/MgO(001) ultrathin films via oblique deposition 2016 Chin. Phys. B 25 097501

[1] Zhao H W, Wu Y Z, Won C and Qiu Z Q 2004 J. Appl. Phys. 95 7300
[2] Fang Y P, He W, Liu H L, Zhan Q F, Du H F, Wu Q, Yang H T, Zhang X Q and Cheng Z H 2010 Appl. Phys. Lett. 97 22507
[3] Chowdhury N and Bedanta S 2014 AIP Adv. 4 027104
[4] Smith D O, Cohen M S and Weiss J P 1960 J. Appl. Phys. 31 1755
[5] Bedanta S, Eimuller T, Kleemann W, Rhensius J, Stromberg F, Amaladass E, Cardoso S and Freitas P P 2007 Phys. Rev. Lett. 98 176601
[6] Pires M J M, Cotta A A C Martins M D, Silva A M A and Macedo W A A 2011 J. Magn. Magn. Mater. 323 789
[7] Takahashi M and Kono T 1960 J. Phys. Soc. Jpn. 15 936
[8] Knorr T G and Hoffman R W 1959 Phys. Rev. 113 1039
[9] Hoshi Y, Suzuki E and Naoe M 1996 J. Appl. Phys. 79 4945
[10] Madurga V, Vergara J and Favieres C 2004 J. Magn. Magn. Mater. 272-276 1681
[11] Rezende S M, Moura J A S, De Aguiar F M and Schreiner W H 1994 Phys. Rev. B 49 15105
[12] Yaegashi S, Kurihara T and Satoh K 1997 J. Appl. Phys. 81 6303
[13] Mattheis R and Quednau G 1999 J. Magn. Magn. Mater. 205 143
[14] Garreau G, Hajjar S, Bubendorff J L, Pirri C, Berling D, Mehdaoui A, Stephan R, Wetzel P, Zabrocki S, Gewinner G, Boukari S and Beaurepaire E 2005 Phys. Rev. B 71 094430
[15] McGuire T R and Potter R I 1975 IEEE Trans. Mag. 11 1018
[16] Dahlberg E D, Riggs K and Prinz G A 1988 J. Appl. Phys. 63 4270
[17] Miller B H and Dahlberg E D 1996 Appl. Phys. Lett. 69 3932
[18] Krivorotov I N, Leighton C, Nogues J, Schuller I K and Dahlberg E D 2002 Phys. Rev. B 65 100402
[19] Cao W N, Li J, Chen G, Zhu J, Hu C R and Wu Y Z 2011 Appl. Phys. Lett. 98 262506
[20] Li J, Jin E, Son H, Tan A, Cao W N, Hwang C and Qiu Z Q 2012 Rev. Sci. Instrum. 83 033906
[21] Ye J, He W, Wu Q, Hu B, Tang J, Zhang X Q, Chen Z Y and Cheng Z H 2014 Appl. Phys. Lett. 105 102406
[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] Bismuth doping enhanced tunability of strain-controlled magnetic anisotropy in epitaxial Y3Fe5O12(111) films
Yunpeng Jia(贾云鹏), Zhengguo Liang(梁正国), Haolin Pan(潘昊霖), Qing Wang(王庆), Qiming Lv(吕崎鸣), Yifei Yan(严轶非), Feng Jin(金锋), Dazhi Hou(侯达之), Lingfei Wang(王凌飞), and Wenbin Wu(吴文彬). Chin. Phys. B, 2023, 32(2): 027501.
[3] 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.
[4] Exchange-coupling-induced fourfold magnetic anisotropy in CoFeB/FeRh bilayer grown on SrTiO3(001)
Qingrong Shao(邵倾蓉), Jing Meng(孟婧), Xiaoyan Zhu(朱晓艳), Yali Xie(谢亚丽), Wenjuan Cheng(程文娟), Dongmei Jiang(蒋冬梅), Yang Xu(徐杨), Tian Shang(商恬), and Qingfeng Zhan(詹清峰). Chin. Phys. B, 2022, 31(8): 087503.
[5] Voltage control magnetism and ferromagnetic resonance in an Fe19Ni81/PMN-PT heterostructure by strain
Jun Ren(任军), Junming Li(李军明), Sheng Zhang(张胜), Jun Li(李骏), Wenxia Su(苏文霞), Dunhui Wang(王敦辉), Qingqi Cao(曹庆琪), and Youwei Du(都有为). Chin. Phys. B, 2022, 31(7): 077502.
[6] 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.
[7] 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.
[8] Sign reversal of anisotropic magnetoresistance and anomalous thickness-dependent resistivity in Sr2CrWO6/SrTiO3 films
Chunli Yao(姚春丽), Tingna Shao(邵婷娜), Mingrui Liu(刘明睿), Zitao Zhang(张子涛), Weimin Jiang(姜伟民), Qiang Zhao(赵强), Yujie Qiao(乔宇杰), Meihui Chen(陈美慧), Xingyu Chen(陈星宇), Ruifen Dou(窦瑞芬), Changmin Xiong(熊昌民), and Jiacai Nie(聂家财). Chin. Phys. B, 2022, 31(10): 107302.
[9] 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.
[10] 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.
[11] Magnetic dynamics of two-dimensional itinerant ferromagnet Fe3GeTe2
Lijun Ni(倪丽君), Zhendong Chen(陈振东), Wei Li(李威), Xianyang Lu(陆显扬), Yu Yan(严羽), Longlong Zhang(张龙龙), Chunjie Yan(晏春杰), Yang Chen(陈阳), Yaoyu Gu(顾耀玉), Yao Li(黎遥), Rong Zhang(张荣), Ya Zhai(翟亚), Ronghua Liu(刘荣华), Yi Yang(杨燚), and Yongbing Xu(徐永兵). Chin. Phys. B, 2021, 30(9): 097501.
[12] Origin of itinerant ferromagnetism in two-dimensional Fe3GeTe2
Xi Chen(陈熙), Zheng-Zhe Lin(林正喆), and Li-Rong Cheng(程丽蓉). Chin. Phys. B, 2021, 30(4): 047502.
[13] Magnetic anisotropy in 5d transition metal-porphyrin molecules
Yan-Wen Zhang(张岩文), Gui-Xian Ge(葛桂贤), Hai-Bin Sun(孙海斌), Jue-Ming Yang(杨觉明), Hong-Xia Yan(闫红霞), Long Zhou(周龙), Jian-Guo Wan(万建国), and Guang-Hou Wang(王广厚). Chin. Phys. B, 2021, 30(4): 047501.
[14] Enhanced hyperthermia performance in hard-soft magnetic mixed Zn0.5CoxFe2.5-xO4/SiO2 composite magnetic nanoparticles
Xiang Yu(俞翔, Li-Chen Wang(王利晨, Zheng-Rui Li(李峥睿, Yan Mi(米岩), Di-An Wu(吴迪安), and Shu-Li He(贺淑莉). Chin. Phys. B, 2021, 30(3): 036201.
[15] 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.
No Suggested Reading articles found!