Please use this identifier to cite or link to this item:
https://scholarbank.nus.edu.sg/handle/10635/119796
Title: | INVESTIGATION OF FE2CR1-XCOXSI HEUSLER ALLOYS FOR MTJ APPLICATIONS | Authors: | WANG YUPU | Keywords: | Heusler alloys; MTJ; TMR; PMA | Issue Date: | 24-Nov-2014 | Citation: | WANG YUPU (2014-11-24). INVESTIGATION OF FE2CR1-XCOXSI HEUSLER ALLOYS FOR MTJ APPLICATIONS. ScholarBank@NUS Repository. | Abstract: | HEUSLER ALLOYS ARE AMONG THE MOST PROMISING MATERIALS CLASS FOR FUTURE MAGNETOELECTRONIC AND SPINTRONIC APPLICATIONS. IN THIS THESIS, WE REPORT THE INVESTIGATION OF FE2CR1-XCOXSI HEUSLER ALLOYS AS MAGNETIC ELECTRODE IN THE MAGNETIC TUNNEL JUNCTION (MTJ) WITH BOTH IN-PLANE AND PERPENDICULAR MAGNETIZATION. FIRSTLY, WE STUDY THE EPITAXIAL GROWTH OF FE2CRSI (FCS) BY SPUTTERING AND ITS IMPLEMENTATION IN IN-PLANE MTJ. ALL TUNNEL MAGNETORESISTANCE (TMR) IS MEASURED USING CURRENT-IN-PLANE TUNNELING (CIPT) TECHNIQUE. THE TMR HAS BEEN ACHIEVED AS 8.1% FOR FCS WITH B2-STRUCTURE. THE TMR PERFORMANCE IS OPTIMIZED BY THE POST-ANNEALING EFFECT AND THE INTERFACE ENGINEERING. NEXT, WE ATTEMPT TO TUNE THE FERMI LEVEL OF FCS BY DOPING WITH CO. THE TMR INCREASES TO 15.6% FOR FE2CR0.5CO0.5SI WITH L21-STRUCTURE. WE FURTHER VARY THE COMPOSITION X IN FE2CR1-XCOXSI (FCCS) AND SYSTEMATICALLY INVESTIGATE THEIR STRUCTURAL, MAGNETIC, AND TRANSPORT PROPERTIES. A TMR OF 28% IS OBTAINED FOR IN-PLANE MTJ USING FE2CR0. | URI: | http://scholarbank.nus.edu.sg/handle/10635/119796 |
Appears in Collections: | Ph.D Theses (Open) |
Show full item record
Files in This Item:
File | Description | Size | Format | Access Settings | Version | |
---|---|---|---|---|---|---|
WangYP.pdf | 18.66 MB | Adobe PDF | OPEN | None | View/Download |
Google ScholarTM
Check
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.