Please wait a minute...
Chin. Phys. B, 2015, Vol. 24(1): 017502    DOI: 10.1088/1674-1056/24/1/017502
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Effect of CoSi2 buffer layer on structure and magnetic properties of Co films grown on Si (001) substrate

Hu Bo (胡泊)a, He Wei (何为)a, Ye Jun (叶军)a b, Tang Jin (汤进)a, Syed Sheraz Ahmada, Zhang Xiang-Qun (张向群)a, Cheng Zhao-Hua (成昭华)a
a State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
b Department of Physics, Beihang University, Beijing 100191, China
Abstract  

Buffer layer provides an opportunity to enhance the quality of ultrathin magnetic films. In this paper, Co films with different thickness of CoSi2 buffer layers were grown on Si (001) substrates. In order to investigate morphology, structure, and magnetic properties of films, scanning tunneling microscope (STM), low energy electron diffraction (LEED), high resolution transmission electron microscopy (HRTEM), and surface magneto-optical Kerr effect (SMOKE) were used. The results show that the crystal quality and magnetic anisotropies of the Co films are strongly affected by the thickness of CoSi2 buffer layers. Few CoSi2 monolayers can prevent the interdiffusion of Si substrate and Co film and enhance the Co film quality. Furthermore, the in-plane magnetic anisotropy of Co film with optimal buffer layer shows four-fold symmetry and exhibits the two-jumps of magnetization reversal process, which is the typical phenomenon in cubic (001) films.

Keywords:  magnetic anisotropy      CoSi2 buffer layers      four-fold symmetry  
Received:  04 July 2014      Revised:  19 August 2014      Accepted manuscript online: 
PACS:  75.30.Gw (Magnetic anisotropy)  
  75.50.Cc (Other ferromagnetic metals and alloys)  
  75.60.Jk (Magnetization reversal mechanisms)  
  75.70.Kw (Domain structure (including magnetic bubbles and vortices))  
Fund: 

Project supported by the National Basic Research Program of China (Grant Nos. 2011CB921801 and 2012CB933102), the National Natural Science Foundation of China (Grant Nos. 11374350, 11034004, 11274361, and 11274033), and the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20131102130005).

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

Cite this article: 

Hu Bo (胡泊), He Wei (何为), Ye Jun (叶军), Tang Jin (汤进), Syed Sheraz Ahmad, Zhang Xiang-Qun (张向群), Cheng Zhao-Hua (成昭华) Effect of CoSi2 buffer layer on structure and magnetic properties of Co films grown on Si (001) substrate 2015 Chin. Phys. B 24 017502

[1] Weiss N, Cren T, Epple M, Rusponi S, Baudot G, Rohart S, Tejeda A, Repain V, Rousset S, Ohresser P, Scheurer F, Bencok P and Brune H 2005 Phys. Rev. Lett. 95 157204
[2] Peng G W, Huan A C H, Tok E S and Feng Y P 2006 Phys. Rev. B 74 195335
[3] Demeter J, Menéndez E, Temst K and Vantomme A 2011 J. Appl. Phys. 110 123902
[4] Prinz G A 1985 Phys. Rev. Lett. 54 1051
[5] Dash S P, Goll D and Carstanjen H D 2007 Appl. Phys. Lett. 90 132109
[6] Steinmuller S J, Vaz C A F, Ström V, Moutafis C, Gürtler C M, Kläui M and Blan J A C 2007 J. Appl. Phys. 101 09D113
[7] Vaz C A F, Lauhoff G, Bland J A C, Langridge S, Bucknall D G, Penfold J, Clarke J, Halder S K and Tanner B K 2007 J. Magn. Magn. Mater. 313 89
[8] Demczyk B G, Naik V M, Lukaszew A, Naik R and Auner G W 1996 J. Appl. Phys. 80 5035
[9] Sun D L, Wang D Y, Du H F, Ning W, Gao J H, Fang Y P, Zhang X Q, Sun Y, Cheng Z H and Shen J 2009 Appl. Phys. Lett. 94 012504
[10] Li J L, Jia J F, Liang X J, Liu X, Wang J Z, Xue Q K, Li Z Q, Tse J S, Zhang Z Y and Zhang S B 2002 Phys. Rev. Lett. 88 066101
[11] Kuschel T, Becker T, Bruns D, Suendorf M, Bertram F, Fumagalli P and Wollschläger J 2011 J. Appl. Phys. 109 093907
[12] Wu Q, He W, Liu H L, Ye J, Zhang X Q, Yang H T, Chen Z Y and Cheng Z H 2013 Sci. Rep. 3 1547
[13] He W, Zhan Q F, Wang D Y, Chen L J, Sun Y and Cheng Z H 2007 Chin. Phys. 16 3541
[14] 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
[15] Gupta R, Khandelwal A, Avasthi D K, Nair K G M and Gupta A 2010 J. Appl. Phys. 107 033902
[16] Cullity B D 1972 Introduction to Magnetic Materials (Menlo Park, CA: Addison Wesley)
[17] Stupakiewicz A, Kirilyuk A, Fleurence A, Gieniusz R, Maroutian T, Beauvillain P, Maziewski A and Rasing Th 2009 Phys. Rev. B 80 094423
[18] Zhan Q F, Vandezande S and Haesendonck C V 2007 Appl. Phys. Lett. 91 122510
[19] Daboo C, Hicken R J, Gu E, Gester M, Gray S J, Eley D E P, Ahmad E, Bland J A C, Ploessl R and Chapman J N 1995 Phys. Rev. B 51 15964
[20] Cowburn R P, Gray S J, Ferré J, Bland J A C and Miltat J 1995 J. Appl. Phys. 78 7210
[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] 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.
[9] 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.
[10] 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.
[11] 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.
[12] 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.
[13] 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.
[14] 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.
[15] Magnetic phase diagram of single-layer CrBr3
Wei Jiang(江伟), Yue-Fei Hou(侯跃飞), Shujing Li(李淑静), Zhen-Guo Fu(付振国), and Ping Zhang(张平). Chin. Phys. B, 2021, 30(12): 127501.
No Suggested Reading articles found!