Grain refining and decoupling in FePt/SiO2 nanogranular films for magnetic recording

IEEE Transactions on Magnetics

Volumn 43, Issue 6, 2007, Pages 2124-2126

  Wei, D H ^a   Yu, C C ^b   Fong, S C ^c   Yuan, F T ^a   Chang, H W ^a   You, K L ^a   Liou, Y ^a   Chin, T S ^c   Yao, Y D ^d  

^a INSTITUTE OF PHYSICS   (Taiwan)

^b NATIONAL UNIVERSITY OF KAOHSIUNG   (Taiwan)

^c NATIONAL TSING HUA UNIVERSITY   (Taiwan)

^d TATUNG UNIVERSITY   (Taiwan)

Author keywords

Angular dependent coercivity; Domain structure; FePt nanogranular films; Magnetic recording; Magnetization reversal; Microstructure refining; SiO 2 inserted layers

Indexed keywords

GRANULAR MATERIALS; IRON COMPOUNDS; MAGNETIC RECORDING; MAGNETIZATION REVERSAL; MICROSTRUCTURE; SILICON COMPOUNDS; THIN FILMS;

ANGULAR DEPENDENT COERCIVITY; DOMAIN STRUCTURE; FEPT NANOGRANULAR FILMS; MICROSTRUCTURE REFINING;

NANOSTRUCTURES;

EID: 34249022230     PISSN: 00189464     EISSN: None     Source Type: Journal    
DOI: 10.1109/TMAG.2007.894175     Document Type: Article

References (18)

1. O. A. Ivanov, L. V. Solina, V. A. Demshina, and L. M. Magat, "Determination of the anisotropy constant and saturation magnetization, and magnetic properties of powders of an iron-platinum alloy," Phys. Met. Metallogr., vol. 35, pp. 81-85, 1973.
2. 2," IEEE Trans. Magn., vol. 36, no. 1, pp. 10-15, Jan. 2000.
3. S. Sun, E. E. Fullerton, D. Weller, and C. B. Murray, "Compositionally controlled FePt nanoparticle materials," IEEE Trans. Magn., vol. 37, no. 4, pp. 1239-1243, Jul. 2001.
4. R. H. Victora, W. B. Peng, J. H. Xue, and J. H. Judy, "Superlattice magnetic recording media: Experiment and simulation," J. Magn Magn. Mat., vol. 235, pp. 305-311, 2001.
5. T. Shima, K. Takanashi, Y. K. Takahashi, and K. Hono, "Preparation and magnetic properties of highly coercive FePt films," Appl. Phys. Lett., vol. 81, pp. 1050-1052, 2002.
6. T. Suzuki and K. Ouchi, "Ordered Fe-Pt (001) thin films by two temperature step depositions for recording media," J. Appl. Phys., vol. 91, pp. 8079-8081, 2002.
7. J. H. Yin, A. K. Singh, T. Suzuki, and Z. G. Zhang, "Recording performance of granular-type FePt-MgO perpendicular media," IEEE Trans. Magn., vol. 41, no. 10, pp. 3208-3210, Oct. 2005.
8. 0 ordering and microstructure of FePt thin films with Cu, Ag and Au additive," J. Appl. Phys., vol. 92, pp. 6104-6109, 2002.
9. F. T. Yuan, S. K. Chen, W. C. Chang, and L. Horng, "Effect of Au cap layer on the magnetic properties and the microstructure for FePt thin films," Appl. Phys. Lett., vol. 81, pp. 3163-3165, 2004.
10. C. Y. You, Y. K. Takahashi, and K. Hono, "Particulate structure of FePt thin films enhanced by Au and Ag alloying," J. Appl. Phys., vol. 100, p. 056105-1-3, 2006.
11. A. Perumal, H. S. Ko, and S. C. Shin, "Magnetic properties of carbon-doped FePt nanogranular films," Appl. Phys. Lett., vol. 83, pp. 3326-3328, 2003.
12. 2 granular thin films," Appl. Phys. Lett., vol. 75, pp. 3162-3164, 1999.
13. 3 thin films with perpendicular magnetic anisotropy," Appl. Phys. Lett., vol. 77, pp. 2225-2227, 2000.
14. 3," Appl. Phys. Lett., vol. 84, pp. 383-385, 2004.
15. D. H. Wei, K. L. You, Y. D. Yao, D. P. Chiang, Y. Liou, T. S. Chin, and C. C. Yu, "Grain size refining and microstructure of FePt/MgO nanogranular thin films," J. Magn. Magn. Mater., vol. 310, pp. e753-e755, 2007.
16. D. H. Wei, S. C. Chou, T. S. Chin, C. C. Yu, Y. Liou, and Y. D. Yao, "Effects of Ag pinning layers on the magnetic properties of Fe/Pt multilayer films," J. Appl. Phys., vol. 97, p. 10N120-1-3, 2005.
17. D. H. Wei, S. C. Chou, T. S. Chin, C. C. Yu, Y. Liou, and Y. D. Yao, "Effects of an ultrathin MgO inserted layer on the magnetic properties of FePt films," J. Appl. Phys., vol. 97, p. 10N121-1-3, 2005.
18. B. D. Cullity and S. R. Stock, Elements of X-ray Diffraction, 3rd ed. Upper Saddle River: Prentice Hall, 2001, pp. 167-171.