Magnetomechanical Four-State Memory

被引:25
|
作者
Watson, Chad S. [1 ]
Hollar, Courtney [1 ,2 ]
Anderson, Kimball [1 ,2 ]
Knowlton, William B. [1 ,3 ]
Muellner, Peter [1 ]
机构
[1] Boise State Univ, Dept Mat Sci & Engn, Boise, ID 83725 USA
[2] Boise State Univ, Dept Mech & Biomed Engn, Boise, ID 83725 USA
[3] Boise State Univ, Dept Elect & Comp Engn, Boise, ID 83725 USA
基金
美国国家科学基金会;
关键词
magnetic shape memory alloys; magnetic memory; nanomechanical properties; MN-GA MARTENSITE; MAGNETIC FORCE MICROSCOPY; CELLULAR-AUTOMATA; SINGLE-CRYSTALS; DATA-STORAGE; THIN-FILMS; STRESS; STRAIN; PHASE;
D O I
10.1002/adfm.201203015
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
With current non-volatile memory technology approaching intrinsic storage density limits, new data storage technologies are under development. Probe-based storage systems provide alternatives to conventional mass storage technologies. Ni-Mn-Ga, a ferromagnetic shape memory alloy (FSMA), is proposed as a medium for multi-bit storage using scanning probe microscopy (SPM) techniques. Local modifications of the magnetic stray field were achieved using nanoindentation. Magnetic poles collect within the indentation, which is leveraged to control the magnetic stray field for the patterning of magnetic information. Four magnetic-based memory states are possible due to magnetic field or stress-induced twin rearrangement along two crystal orientations, each with two possible magnetic orientations.
引用
收藏
页码:3995 / 4001
页数:7
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