The thermal stability parameter in a nanostructured exchange-coupled trilayer for high density magnetic random access memory
- 주제(키워드) Synthetic antiferromagnets , energy barrier , thermal stability
- 발행기관 고려대학교 대학원
- 지도교수 임상호
- 발행년도 2008
- 제출일 2008-07-04
- 학위수여년월 2008. 8
- 학위명 석사
- 학과 일반대학원 신소재공학과
- 세부전공 신소재공학전공
- 원문페이지 43 p
- 본문언어 영어
- 제출원본 000045504303
초록/요약
An analytical/numerical combined method is used to calculate the thermal stability parameter of an exchange-coupled trilayer, Co-Fe-B (2 nm)/Ru (0.6 nm)/Co-Fe-B (2 nm), with lateral dimensions of 160 nm ⅹ 80 nm. Micromagnetic simulation is performed to obtain the equilibrium magnetic configuration, from which the effective magnetostatic fields, which are used as inputs in an analytical equation for the total magnetic energy, are obtained by averaging over the entire magnetic layers. Systematic calculations, even considering the effects of edge rounding during nanofabrication, are performed and the thermal stability parameter is calculated to be in the range 62 ~ 69, which is in agreement with the value (68) reported in the literature from the current induced magnetization switching experiments by using the Slonczewski equation
more목차
Abstract
List of figure captions
Chap. 1 Introduction
Chap. 2 Model and Calculations
Chap. 3 Results and Discussions
3. 1 Effective magnetostatic field and energy barrier
3. 2 Energy profile and applied field dependence
3. 3 Energy barrier Phase diagram
4. Conclusion
5. Reference
