| Magnetic domain observation in writer pole tip for perpendicular recording head by electron holography JJ Kim, K Hirata, Y Ishida, D Shindo, M Takahashi, A Tonomura Applied Physics Letters 92 (16), 2008 | 45 | 2008 |
| Tunnel magnetoresistive effect element and thin-film magnetic head with tunnel magnetoresistive effect read head element K Hirata, S Miura US Patent 7,715,156, 2010 | 29 | 2010 |
| Magnetic head for perpendicular magnetic recording and method of manufacturing same K Hirata, H Ukita, S Narushima, T Isamu, H Umehara, H Watanabe, ... US Patent 8,072,706, 2011 | 28 | 2011 |
| Perpendicular magnetic recording element having stacked FM and AFM films applying magnetic bias along easy axis of soft magnetic film K Hirata, K Noguchi, T Mino, T Roppongi US Patent 7,359,146, 2008 | 27 | 2008 |
| Near-field light generator including a plasmon generator and a waveguide K Hirata, K Kawamori, N Mori, K Tanaka US Patent 8,675,457, 2014 | 24 | 2014 |
| Current-perpendicular-to-plane magneto-resistive element including multilayer lower magnetic shielding film K Hirata, K Shimazawa, A Yamaguchi, K Noguchi US Patent 7,663,845, 2010 | 21 | 2010 |
| Perpendicular magnetic recording head and magnetic recording device K Hirata, K Kurihara, K Anagawa, T Kagami US Patent 8,300,359, 2012 | 19 | 2012 |
| Magnetoresistive element having free layer, pinned layer, and spacer layer disposed therebetween, the spacer layer including semiconductor layer Y Tsuchiya, K Hirata, T Mizuno, K Shimazawa US Patent 7,782,575, 2010 | 19 | 2010 |
| Perpendicular magnetic write head and magnetic recording device K Anagawa, K Kurihara, T Kagami, K Hirata, M Ota US Patent 8,233,237, 2012 | 18 | 2012 |
| Perpendicular magnetic write head with side shield saturation magnetic flux density increasing away from magnetic pole K Hirata, A Yamaguchi, M Kato, H Ukita, K Anagawa, M Ota US Patent 8,164,853, 2012 | 18 | 2012 |
| Method for testing noise of thin-film magnetic head, and magnetic disk drive apparatus with noise testing function T Uesugi, T Kagami, T Sasaki, K Hirata, M Hirose, CM Lee, KP Tso US Patent 8,085,038, 2011 | 18 | 2011 |
| CPP type magneto-resistive effect device having a semiconductor oxide spacer layer and magnetic disk system S Hara, K Hirata, K Shimazawa, Y Tsuchiya, T Mizuno US Patent 7,672,085, 2010 | 17 | 2010 |
| A study of pole material properties for pole erasure suppression in perpendicular recording heads K Hirata, T Roppongi, K Noguchi Journal of magnetism and magnetic materials 287, 352-356, 2005 | 17 | 2005 |
| Magneto-resistive element, thin film magnetic head, magnetic head device, and magnetic recording/reproducing apparatus A Yamaguchi, K Hirata, S Miura, Y Tsuchiya, K Noguchi US Patent 8,000,063, 2011 | 16 | 2011 |
| High coercivity ferrite thin-film tape media for perpendicular recording S Yamamoto, K Hirata, H Kurisu, M Matsuura, T Doi, K Tamari Journal of magnetism and magnetic materials 235 (1-3), 342-346, 2001 | 16 | 2001 |
| Magnetic recording device, magnetic recording method and magnetic recording medium for shingle write scheme K Hirata, N Ota, N Yamanaka US Patent 8,559,123, 2013 | 14 | 2013 |
| Magnetic head and method of manufacture thereof wherein the head includes a pole layer and non-magnetic layer having a continuous tapered face opposed to a trailing shield K Hirata, K Anagawa, M Nishiyama, H Yatsu, S Narushima, H Watanabe, ... US Patent 8,472,137, 2013 | 14 | 2013 |
| Hard disk system incorporating a current perpendicular to plane magneto-resistive effect device with a spacer layer in the thickness range showing conduction performance … T Mizuno, Y Tsuchiya, K Hirata US Patent 8,000,066, 2011 | 14 | 2011 |
| Material properties and domain structure influence on pole erasure occurrence in perpendicular recording heads K Hirata, T Roppongi, M Ohtsuki, A Yamaguchi, K Noguchi IEEE transactions on magnetics 41 (10), 2902-2904, 2005 | 14 | 2005 |
| Thermally assisted magnetic head slider, head gimbal assembly, and hard disk drive with the same, and manufacturing method thereof Y Fujita, R Fujii, H Tanzawa, N Nishijima, TB Lee, JH Huang, HC Liang, ... US Patent 8,588,040, 2013 | 12 | 2013 |
