Fabrication of CoFe2O4 ferrite nanowire arrays in porous silicon template and their local magnetic properties

被引：11

作者：

Zheng, Hui ^{[1
]}

Han, Man-Gui ^{[1
]}

Deng, Long-Jiang ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China

来源：

CHINESE PHYSICS B | 2016年 / 25卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ferrite nanowires; porous silicon; metal-assisted chemical etching; first order reversal curves; SI NANOWIRES; NANOPARTICLES; CRYSTAL; GOLD;

D O I：

10.1088/1674-1056/25/2/026201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

CoFe2O4 ferrite nanowire arrays are fabricated in porous silicon templates. The porous silicon templates are prepared via metal-assisted chemical etching with gold (Au) nanoparticles as the catalyst. Subsequently, CoFe2O4 ferrite nanowires are successfully synthesized into porous silicon templates by the sol-gel method. The magnetic hysteresis loop of nanowire array shows an isotropic feature of magnetic properties. The coercivity and squareness ratio (Mr/Ms) of ensemble nanowires are found to be 630 Oe (1 Oe = 79.5775 A.m(-1) and 0.4 respectively. However, the first-order reversal curve (FORC) is adopted to reveal the probability density function of local magnetostatic properties (i.e., interwire interaction field and coercivity). The FORC diagram shows an obvious distribution feature for interaction field and coercivity. The local coercivity with a value of about 1000 Oe is found to have the highest probability.

引用

页数：5

共 31 条

[1] Large area patterned magnetic nanostructures [J].

Adeyeye, A. O. ;

Singh, N. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2008, 41 (15)

[2] An effective method to probe local magnetostatic properties in a nanometric FePd antidot array [J].

Beron, F. ;

Pirota, K. R. ;

Vega, V. ;

Prida, V. M. ;

Fernandez, A. ;

Hernando, B. ;

Knobel, M. .

NEW JOURNAL OF PHYSICS, 2011, 13

[3] Metal-assisted chemical etching of silicon in HF-H2O2 [J].

Chartier, C. ;

Bastide, S. ;

Levy-Clement, C. .

ELECTROCHIMICA ACTA, 2008, 53 (17) :5509-5516

[4] Magnetization reversal and nanoscopic magnetic-phase separation in La1-xSrxCoO3 -: art. no. 134419 [J].

Davies, JE ;

Wu, J ;

Leighton, C ;

Liu, K .

PHYSICAL REVIEW B, 2005, 72 (13)

[5] Block copolymer micelle nanolithography [J].

Glass, R ;

Möller, M ;

Spatz, JP .

NANOTECHNOLOGY, 2003, 14 (10) :1153-1160

[6] Preparation and characterization of nickel manganese ferrite [J].

Gu Jian-Jun ;

Han Jin-Rong ;

Cheng Fu-Wei ;

Zhao Guo-Liang ;

Liu Li-Hu ;

Sun Hui-Yuan .

ACTA PHYSICA SINICA, 2012, 61 (09)

[7] Growth of nanowire superlattice structures for nanoscale photonics and electronics [J].

Gudiksen, MS ;

Lauhon, LJ ;

Wang, J ;

Smith, DC ;

Lieber, CM .

NATURE, 2002, 415 (6872) :617-620

[8] CoFe2O4 nanowire arrays prepared by template-electrodeposition method and further oxidization [J].

Hua, Z. H. ;

Chen, R. S. ;

Li, C. L. ;

Yang, S. G. ;

Lu, M. ;

Gu, B. X. ;

Du, Y. W. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 427 (1-2) :199-203

[9] Metal-assisted electrochemical etching of silicon [J].

Huang, Z. P. ;

Geyer, N. ;

Liu, L. F. ;

Li, M. Y. ;

Zhong, P. .

NANOTECHNOLOGY, 2010, 21 (46)

[10] Extended arrays of vertically aligned sub-10 nm diameter [100] Si nanowires by metal-assisted chemical etching [J].

Huang, Zhipeng ;

Zhang, Xuanxiong ;

Reiche, Manfred ;

Liu, Lifeng ;

Lee, Woo ;

Shimizu, Tomohiro ;

Senz, Stephan ;

Goesele, Ulrich .

NANO LETTERS, 2008, 8 (09) :3046-3051

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