C.W. Shih
National Chung Cheng University
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Publication
Featured researches published by C.W. Shih.
Nanoscale Research Letters | 2012
H.W. Chang; Fu-Te Yuan; C.W. Shih; Ching-Shun Ku; Ping-Han Chen; C.R. Wang; W.C. Chang; Shien-Uang Jen; Hsing-Yi Lee
Highly textured BiFeO3(001) films were formed on L10-FePt(001) bottom electrodes on glass substrates by sputtering at reduced temperature of 400°C. Good electric polarization 2Pru2009=u200980 and 95 μC/cm2, comparable to that of the reported epitaxial films, and coercivity Ecu2009=u2009415 and 435u2009kV/cm are achieved in the samples with 20-nm- and 30-nm-thick electrodes. The BiFeO3(001) films show different degrees of compressive strain. The relation between the variations of strain and 2Pr suggests that the enhancement of 2Pr resulted from the strain-induced rotation of spontaneous polarization. The presented results open possibilities for the applications based on electric-magnetic interactions.
Applied Physics Letters | 2014
H.W. Chang; M. C. Liao; C.W. Shih; W.C. Chang; Chun-Chuen Yang; Chung-Chin Hsiao; Hao Ouyang
Hard magnetic property enhancement of melt spun Co88Hf12 ribbons by boron doping is demonstrated. B-doping could not only remarkably enhance the magnetic properties from energy product ((BH)max) of 2.6 MGOe and intrinsic coercivity (iHc) of 1.5 kOe for B-free Co88Hf12 ribbons to (BH)maxu2009=u20097.7 MGOe and iHcu2009=u20093.1 kOe for Co85Hf12B3 ribbons but also improve the Curie temperature (TC) of 7:1 phase. The (BH)max value achieved in Co85Hf12B3 ribbons is the highest in Co-Hf alloy ribbons ever reported, which is about 15% higher than that of Co11Hf2B ribbons spun at 16u2009m/s [M. A. McGuire, O. Rios, N. J. Ghimire, and M. Koehler, Appl. Phys. Lett. 101, 202401 (2012)]. The structural analysis confirms that B enters the orthorhombic Co7Hf (7:1) crystal structure as interstitial atoms, forming Co7HfBx, in the as-spun state. Yet B may diffuse out from the 7:1 phase after post-annealing, leading to the reduction of Curie temperature and the magnetic properties. The uniformly refined microstructure with B-doping results i...
Journal of Magnetism and Magnetic Materials | 2013
H.W. Chang; C.F. Tsai; C. C. Hsieh; C.W. Shih; W.C. Chang; C. C. Shaw
Journal of Alloys and Compounds | 2012
H.W. Chang; W.C. Lin; C.W. Shih; C. C. Hsieh; W.C. Chang
Applied Surface Science | 2014
C.Y. Shen; H.W. Chang; F.T. Yuan; M.C. Lin; C.C. Su; H.H. Yeh; M.F. Huang; C.R. Wang; C.W. Shih; W.C. Chang
Applied Surface Science | 2015
H.W. Chang; C.Y. Shen; F.T. Yuan; K.T. Tu; Y.C. Lo; S.Y. Tu; C.R. Wang; Chi-Shun Tu; H. Ouyang; C.W. Shih; W.C. Chang; S. U. Jen
Journal of Alloys and Compounds | 2012
Zun-Xiao Liu; W.C. Lin; C.W. Shih; C. C. Hsieh; H.W. Chang; W.C. Chang; Aru Yan
Journal of Magnetism and Magnetic Materials | 2014
C.Y. Shen; F.T. Yuan; H.W. Chang; M.C. Lin; C.C. Su; S.T. Chang; C.R. Wang; J. K. Mei; S. N. Hsiao; C.C. Chen; C.W. Shih; W.C. Chang
Journal of Alloys and Compounds | 2012
H.W. Chang; Y.H. Huang; C. C. Hsieh; C.W. Shih; W.C. Chang; Desheng Xue
Journal of Magnetism and Magnetic Materials | 2014
S.C. Ma; Y.H. Liu; C.W. Shih; Y.I. Lee; W.C. Chang