Title:
SINGLE ELECTRONIC CONTROLLED MAGNETIC RESISTANCE ELEMENT
Document Type and Number:
Japanese Patent JP3258241
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the performance of an element structure and an operation mode by setting the direction of the magnetization of a second ferromagnetic body with the magnetization in second direction of a certain initial direction which is pinched by two first ferromagnetic bodies which magnetization in a first direction, via a tunnel junction in a direction other than the second direction.
SOLUTION: The basic elements of an element are a row of double tunnel junctions, consisting of two extremely fine tunnel junctions 11 and 12 that are connected in series and a gate 13 for generating inverted magnetic field. The double-tunnel junction is formed by two first ferromagnetic electrodes 14 and a second ferromagnetic electrode 15 that is pinched by these via a tunnel barrier 16. Then, the magnetizations of the first and the second ferromagnetic electrodes are in, parallel disposing opposite directions each other at least near a junction surface due to the mutual operation of a magnetic dipole element, and the magnetization of the second ferromagnetic electrode is inverted at a magnetic field that exceeds the inverted magnetic field of a soft magnetic film as the second ferromagnetic electrode, thus achieving a parallel magnetization state.
Inventors:
Shuichi Iwabuchi
Satoshi Tanamoto
Satoshi Tanamoto
Application Number:
JP25985896A
Publication Date:
February 18, 2002
Filing Date:
September 30, 1996
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G01R33/09; H01L29/66; H01L43/08; (IPC1-7): H01L43/08; G01R33/09
Other References:
１９９８ Ｐｒｏｃ．ｏｆ ２ｎｄ Ｉｎｔ．Ｗｏｒｋｓｈｏｐ ｏｎ Ｐｈｙｓ．ａｎｄ Ｍｏｄｅｌｉｎｇ ｏｆ Ｄｅｖｉｃｅｓ Ｂａｓｅｄ ｏｎ Ｌｏｗ−Ｄｉｍｅｎｔｉｏｎａｌ Ｓｔｒｕｃｔｕｒｅｓ，ｐｐ．７８−８２
ＩＢＭ Ｊ．Ｒｅｓ．Ｄｅｖｅｌｏｐ．，Ｖｏｌ．３２，Ｎｏ．１４４，，ｐｐ．１４４−１５８
ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｍａｇｎｅｔｉｃｓ，Ｖｏｌ．ＭＡＧ−１８，Ｎｏ．２，ｐｐ．７０７−７０８
ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｍａｇｎｅｔｉｃｓ，Ｖｏｌ．ＭＡＧ−２３，Ｎｏ．２，ｐｐ．１１４２−１１４５
Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ，Ｖｏｌ．６５，Ｎｏ．１１，ｐｐ．３４４９−３４５１
Ｊｐｎ．Ｊ．Ａｐｐｌ．Ｐｈｙｓ．，Ｖｏｌ．３５，Ｐａｒｔ １，Ｎｏ．４Ａ，ｐｐ．２３６９−２３７１
Ｐｈｙｓｉｃａｌ Ｒｅｖｉｅｗ Ｂ，Ｖｏｌ．５１，Ｎｏ．４，ｐｐ．２３８７−２３９８
ＩＢＭ Ｊ．Ｒｅｓ．Ｄｅｖｅｌｏｐ．，Ｖｏｌ．３２，Ｎｏ．１４４，，ｐｐ．１４４−１５８
ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｍａｇｎｅｔｉｃｓ，Ｖｏｌ．ＭＡＧ−１８，Ｎｏ．２，ｐｐ．７０７−７０８
ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｍａｇｎｅｔｉｃｓ，Ｖｏｌ．ＭＡＧ−２３，Ｎｏ．２，ｐｐ．１１４２−１１４５
Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ，Ｖｏｌ．６５，Ｎｏ．１１，ｐｐ．３４４９−３４５１
Ｊｐｎ．Ｊ．Ａｐｐｌ．Ｐｈｙｓ．，Ｖｏｌ．３５，Ｐａｒｔ １，Ｎｏ．４Ａ，ｐｐ．２３６９−２３７１
Ｐｈｙｓｉｃａｌ Ｒｅｖｉｅｗ Ｂ，Ｖｏｌ．５１，Ｎｏ．４，ｐｐ．２３８７−２３９８
Attorney, Agent or Firm:
Takehiko Suzue (6 outside)
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