Ultra-Wideband 1–20 GHz Non-Contact FMR Test System for TMR HGA
Article Sidebar
Published:
Mar 19, 2021
Keywords:
Ferromagnetic resonance of TMR Read head FMR test FMR test for HGA TMR sensor test
Main Article Content
Abstract
The read sensor of hard disk drive abnormality at the bar level is detected by a ferromagnetic resonant analyzer (FMRA) system requiring a galvanic contact to the sensor. After the read head is assembled to the slider, a quasistatic tester is used to check the slider functionality. At this stage, the FMR information of the read sensor cannot be easily accessed since there is no suitable measurement technique available. In this research, an innovative non-contact ferromagnetic resonant (FMR) measurement for the read head sensor quality control at slider level is reported for the first time. The proposed test system is designed for detecting the FMR from 1 to 20 GHz. The FMR is interpreted from the peak of read sensor resistance over the frequency span. This new measurement technique has been applied to a model of tunneling magnetoresistance (TMR) sensor and compared with the FMRA. The FMR frequency at 5.4 GHz can be detected by the proposed measurement system with only 1 MHz difference from the value obtained from conventional FMRA. The higher effective stiffness field of the read sensor is also observed from the lower FMR resistance in the shorter stripe height head.
Article Details
How to Cite
Namahoot, A., Chalermwisutkul, S., & Akkaraekthalin, P. (2021). Ultra-Wideband 1–20 GHz Non-Contact FMR Test System for TMR HGA. Applied Science and Engineering Progress, 14(2), 284–294. https://doi.org/10.14416/j.asep.2019.09.005
Issue
Section
Research Articles
References
[1] R. Mark. (2017, Dec.). Tech Talk on HDD Areal Density. Seagate Technology PLC. California, US [Online]. Available: https://www.seagate. com/www-content/ investors/_shared/docs/techtalk- mark-re-20150825.pdf
[2] Y. Chen, D. Song, J. Qiu, P. Kolbo, L. A Wang, Q. He, M. Covington, S. W. Stokes, V. V. Sapozhnikov, D. V. Dimitrov, K. Gao, and B. M. Miller, “2 Terabit per square inch reader design outlook,” IEEE Transactions on Magnetics, vol. 46, no. 3, pp. 697–701, 2010.
[3] M. Takagishi, K. Yamada, H. Iwasaki, H. N. Fuke, and S. Hashimoto, “Magnetoresistance ratio and resistance area design of CPP-MR film for 2–5 Tb/in2 read sensors,” IEEE Transactions on Magnetics, vol. 46, no. 6, pp. 2086–2089, 2010.
[4] V. Lerswanichkul and N. Rojanarowan, “Qualitybased sampling test design for head gimbal assembly,” IOSR Journal of Engineering (IOSRJEN), vol. 3, no. 9, pp. 57–64, 2013.
[5] A. Taratorin, “Measurement of effective free layer magnetization orientation of TMR sensors,” IEEE Transactions on Magnetics, vol. 45, no. 10, pp. 3449–3452, 2009.
[6] K. B. Klaassen, X. Z. Xing, and J. C. L. van Peppen, “Broad-band noise spectroscopy of giant magnetoresistive read heads,” IEEE Transactions on Magnetics, vol. 41, no. 7, pp. 2307–2317, 2005.
[7] A. V. Nazarov, H. S. Cho, J. Nowak, S. Stokes, and N. Tabat, “Tunable ferromagnetic resonance peak in tunneling magnetoresistive sensor structures,” Applied Physics Letters, vol. 81, no. 24, pp. 4559– 4561, 2002.
[8] R. J. M. van de Veerdonk and P. J. L. Beliën, “1/f noise in anisotropic and giant magnetoresistive elements,” Journal of Applied Physics, vol. 82, no. 12, pp. 6152–6164, 1997.
[9] J. C. Jury, K. B. Klaassen, J. C. L. van Peppen, and S. X. Wang, “Measurement and analysis of noise sources in giant magnetoresistive sensors up to 6 GHz,” IEEE Transactions on Magnetics, vol. 38, no. 5, pp. 3545–3555, 2002.
[10] Z. Jun and M. Loera, “Amplitude and asymmetry correlation study between quasistatic and dynamic electrical testing of MR sensors,” IEEE Transactions on Magnetics, vol. 34, no. 4, pp. 1525–1527, 1998.
[11] L. Baril, B. Higgins, and A. Wallash, “Effects of ESD transients on noise in tunneling recording heads,” Journal of Electrostatics, pp. 147–150, 2006.
[12] J. R. Childress and R. E. Fontana, “Magnetic recording read head sensor technology,” Comptes Rendus Physique, vol. 6, no. 9, pp. 997–1012, 2005.
[13] S. Mao, Y. Chen, F. Liu, X. Chen, B. Xu, P. Lu, M. Patwari, Haiwen Xi, Clif Chang, B. Miller, D. Menard, B. Pant, J. Loven, K. Duxstad, S. Li, Z. Zhang, A. Johnston, R. Lamberton, M. Gubbins, T. McLaughlin, J. Gadbois, J. Ding, B. Cross, S. Xue, and P. Ryan, “Commercial TMR heads for hard disk drives: Characterization and extendibility at 300 gbit2,” IEEE Transactions on Magnetics, vol. 42, no. 2, pp. 97–102, 2006.
[14] N. Zhao, R. Malik, and W. Liao, “Difference amplifier forms heart of precision current source,” Analog Dialogue, vol. 43 no. 3, pp. 22–24, 2009.
[15] G. Yingjie and I. Wolff, “A new miniature magnetic field probe for measuring three-dimensional fields in planar high-frequency circuits,” IEEE Transactions on Microwave Theory and Techniques, vol. 44, no. 6, pp. 911–918, 1996.
[16] K. Jung-Min, K. Woo-Tae, and Y. Jong-Gwan, “Resonance-suppressed magnetic field probe for EM field-mapping system,” IEEE Transactions on Microwave Theory and Techniques, vol. 53, no. 9, pp. 2693–2699, 2005.
[17] G. Ghione and C. Naldi, “Analytical formulas for coplanar lines in hybrid and monolithic MICs,” Electronics Letters, vol. 20, no. 4, pp. 179–181, 1984.
[18] A. Namahoot, P. Akkaraekthalin, and S. Chalermwisutkul, “Design of a low-cost 1-20 GHz magnetic near-field probe with FR-4 printed circuit board,” International Journal of RF and Microwave Computer-Aided Engineering, to be published. doi: 10.1002/mmce.21958.
[19] D. Baudry, C. Arcambal, A. J.-O. Louis, B. Mazari, and P. Eudeline, “Applications of the nearfield techniques in EMC investigations,” IEEE Transactions on Electromagnetic Compatibility, vol. 49, no. 3, pp. 485–493, 2007.
[20] P. Weawhongse, C. Sa-Ngiamsak, W. Pijitrojana, and K. Vichienchom, “free layer characterization of TMR head with multi-stripe height by using ferro magnetic resonance analyzer (FMRA),” Applied Mechanics and Materials, vol. 781, pp. 195–198, 2015.
[2] Y. Chen, D. Song, J. Qiu, P. Kolbo, L. A Wang, Q. He, M. Covington, S. W. Stokes, V. V. Sapozhnikov, D. V. Dimitrov, K. Gao, and B. M. Miller, “2 Terabit per square inch reader design outlook,” IEEE Transactions on Magnetics, vol. 46, no. 3, pp. 697–701, 2010.
[3] M. Takagishi, K. Yamada, H. Iwasaki, H. N. Fuke, and S. Hashimoto, “Magnetoresistance ratio and resistance area design of CPP-MR film for 2–5 Tb/in2 read sensors,” IEEE Transactions on Magnetics, vol. 46, no. 6, pp. 2086–2089, 2010.
[4] V. Lerswanichkul and N. Rojanarowan, “Qualitybased sampling test design for head gimbal assembly,” IOSR Journal of Engineering (IOSRJEN), vol. 3, no. 9, pp. 57–64, 2013.
[5] A. Taratorin, “Measurement of effective free layer magnetization orientation of TMR sensors,” IEEE Transactions on Magnetics, vol. 45, no. 10, pp. 3449–3452, 2009.
[6] K. B. Klaassen, X. Z. Xing, and J. C. L. van Peppen, “Broad-band noise spectroscopy of giant magnetoresistive read heads,” IEEE Transactions on Magnetics, vol. 41, no. 7, pp. 2307–2317, 2005.
[7] A. V. Nazarov, H. S. Cho, J. Nowak, S. Stokes, and N. Tabat, “Tunable ferromagnetic resonance peak in tunneling magnetoresistive sensor structures,” Applied Physics Letters, vol. 81, no. 24, pp. 4559– 4561, 2002.
[8] R. J. M. van de Veerdonk and P. J. L. Beliën, “1/f noise in anisotropic and giant magnetoresistive elements,” Journal of Applied Physics, vol. 82, no. 12, pp. 6152–6164, 1997.
[9] J. C. Jury, K. B. Klaassen, J. C. L. van Peppen, and S. X. Wang, “Measurement and analysis of noise sources in giant magnetoresistive sensors up to 6 GHz,” IEEE Transactions on Magnetics, vol. 38, no. 5, pp. 3545–3555, 2002.
[10] Z. Jun and M. Loera, “Amplitude and asymmetry correlation study between quasistatic and dynamic electrical testing of MR sensors,” IEEE Transactions on Magnetics, vol. 34, no. 4, pp. 1525–1527, 1998.
[11] L. Baril, B. Higgins, and A. Wallash, “Effects of ESD transients on noise in tunneling recording heads,” Journal of Electrostatics, pp. 147–150, 2006.
[12] J. R. Childress and R. E. Fontana, “Magnetic recording read head sensor technology,” Comptes Rendus Physique, vol. 6, no. 9, pp. 997–1012, 2005.
[13] S. Mao, Y. Chen, F. Liu, X. Chen, B. Xu, P. Lu, M. Patwari, Haiwen Xi, Clif Chang, B. Miller, D. Menard, B. Pant, J. Loven, K. Duxstad, S. Li, Z. Zhang, A. Johnston, R. Lamberton, M. Gubbins, T. McLaughlin, J. Gadbois, J. Ding, B. Cross, S. Xue, and P. Ryan, “Commercial TMR heads for hard disk drives: Characterization and extendibility at 300 gbit2,” IEEE Transactions on Magnetics, vol. 42, no. 2, pp. 97–102, 2006.
[14] N. Zhao, R. Malik, and W. Liao, “Difference amplifier forms heart of precision current source,” Analog Dialogue, vol. 43 no. 3, pp. 22–24, 2009.
[15] G. Yingjie and I. Wolff, “A new miniature magnetic field probe for measuring three-dimensional fields in planar high-frequency circuits,” IEEE Transactions on Microwave Theory and Techniques, vol. 44, no. 6, pp. 911–918, 1996.
[16] K. Jung-Min, K. Woo-Tae, and Y. Jong-Gwan, “Resonance-suppressed magnetic field probe for EM field-mapping system,” IEEE Transactions on Microwave Theory and Techniques, vol. 53, no. 9, pp. 2693–2699, 2005.
[17] G. Ghione and C. Naldi, “Analytical formulas for coplanar lines in hybrid and monolithic MICs,” Electronics Letters, vol. 20, no. 4, pp. 179–181, 1984.
[18] A. Namahoot, P. Akkaraekthalin, and S. Chalermwisutkul, “Design of a low-cost 1-20 GHz magnetic near-field probe with FR-4 printed circuit board,” International Journal of RF and Microwave Computer-Aided Engineering, to be published. doi: 10.1002/mmce.21958.
[19] D. Baudry, C. Arcambal, A. J.-O. Louis, B. Mazari, and P. Eudeline, “Applications of the nearfield techniques in EMC investigations,” IEEE Transactions on Electromagnetic Compatibility, vol. 49, no. 3, pp. 485–493, 2007.
[20] P. Weawhongse, C. Sa-Ngiamsak, W. Pijitrojana, and K. Vichienchom, “free layer characterization of TMR head with multi-stripe height by using ferro magnetic resonance analyzer (FMRA),” Applied Mechanics and Materials, vol. 781, pp. 195–198, 2015.