Head noise characterization of GMR & TMR sensors for magnetic recording | |
| Author | Suhane, Amit Kumar |
| Call Number | AIT Thesis no.ME-05-05 |
| Subject(s) | Magnetic recorders and recording Noise--Measurement |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Magnetic recording would be effortless if what we obtain from a recording channel is clean signal. In reality, signals always coexist with noises. The higher the recording density, more serious will be the noise. As a matter of fact, usually it is the noise level in the magnetic recording system that limits the achievable recording density. With the advent of TMR heads and increasing areal densities, the head noise is an important parameter for head performance measurement and should be considered at the design stage of head. This thesis work was focused on Head Noise measurement for GMR & TMR sensors, and studies the influence of sensor design parameters on head noise. The objective was to develop the test methodology and do the automation so that it can be used for industrial testing for development department. The Head noise was measured at Quasi Static tester with the help of Spectrum analyzer. The successful statistical characterization has been done for the different designs. The statistical models were proposed for different designs to estimate the head noise nature with the design parameter variation. The head noise correlation with other performance parameter has been studied, both at QST and at DET. |
| Year | 2005 |
| Type | Thesis |
| School | School of Advanced Technologies (SAT) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Microelectronics (ME) |
| Chairperson(s) | Lertsak Lekawat |
| Examination Committee(s) | Afzulpurkar, Nitin ;Huynh Trung Luong ;Louis, Ernest |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2005 |