Abstract
This chapter reviews the fundamentals of the writing process. Some aspects of the design of magneto-resistive heads (MRHs) depend on the written magnetization transition. In order to obtain the maximum output voltage from an MRH, it must match properly the written magnetization transition in the recording medium. The stylized writing head consists of three parts: the core, the coil, and the gap. The writing current is toggled from one polarity to the other in order to write digital transitions of the remnant magnetization in the recording medium. Because high-voltage write amplifiers are required to drive high-inductance heads, the normal design trend is to use a small number of turns and high current rather than vice-versa. When the write current is held constant, the magnetization written in the recording medium is at one of the remanent levels. When the write current is suddenly changed from one polarity to the other, the written magnetization undergoes a transition from one polarity of remanent magnetization to the other. This chapter reviews the writing process and various aspects related to it.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
