Ferromagnetism in Mn- and Co-implanted ZnO nanorods

被引:108
作者
Ip, K
Frazier, RM
Heo, YW
Norton, DP
Abernathy, CR
Pearton, SJ [1 ]
Kelly, J
Rairigh, R
Hebard, AF
Zavada, JM
Wilson, RG
机构
[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA
[2] Univ Florida, Dept Phys, Gainesville, FL 32611 USA
[3] USA, Res Off, Res Triangle Pk, NC 27709 USA
来源
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 2003年 / 21卷 / 04期
关键词
D O I
10.1116/1.1585069
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
ZnO nanorods with diameters of 15-30 nm were grown on Ag-coated Si substrates by catalyst-driven molecular beam epitaxy and then implanted with Mn+ or Co+ ions to doses of 1-5x 10(16) cm(-2). After subsequent annealing at 700 degreesC for 5 min, the structural properties of the nanorods were unaffected, but they exhibited ferromagnetism that persisted to temperatures of 225-300 K. The coercive fields were less than or equal to100 Oe even at 10 K. The results are similar to those obtained for implantation of Mn+ or Co+ ions in bulk single-crystal ZnO and indicate promise for nanorods for nanoscale spintronic applications. (C) 2003 American Vacuum Society.
引用
收藏
页码:1476 / 1481
页数:6
相关论文
共 45 条
[1]  
[Anonymous], MAT MAGNETIC FUNCTIO
[2]   ZnO diode fabricated by excimer-laser doping [J].
Aoki, T ;
Hatanaka, Y ;
Look, DC .
APPLIED PHYSICS LETTERS, 2000, 76 (22) :3257-3258
[3]   Electrical characterization of vapor-phase-grown single-crystal ZnO [J].
Auret, FD ;
Goodman, SA ;
Legodi, MJ ;
Meyer, WE ;
Look, DC .
APPLIED PHYSICS LETTERS, 2002, 80 (08) :1340-1342
[4]   Optically pumped lasing of ZnO at room temperature [J].
Bagnall, DM ;
Chen, YF ;
Zhu, Z ;
Yao, T ;
Koyama, S ;
Shen, MY ;
Goto, T .
APPLIED PHYSICS LETTERS, 1997, 70 (17) :2230-2232
[5]   Effects of disorder on ferromagnetism in diluted magnetic semiconductors [J].
Berciu, M ;
Bhatt, RN .
PHYSICAL REVIEW LETTERS, 2001, 87 (10) :1-107203
[6]  
Berkowitz AE, 1969, MAGNETISM METALLURGY, V1
[7]  
Buschow K. H. J., 1995, HDB MAGNETIC MAT, V9
[8]   Fabrication of high sensitivity ZnO thin film ultrasonic devices by electrochemical etch techniques [J].
Chang, CC ;
Chen, YE .
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1997, 44 (03) :624-628
[9]   ZnO as a novel photonic material for the UV region [J].
Chen, YF ;
Bagnall, D ;
Yao, TF .
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2000, 75 (2-3) :190-198
[10]   Influence of disorder on ferromagnetism in diluted magnetic semiconductors [J].
Chudnovskiy, AL ;
Pfannkuche, D .
PHYSICAL REVIEW B, 2002, 65 (16) :1-7