ES2154565A1 - Sensor magnetico producido por una constriccion. - Google Patents

Sensor magnetico producido por una constriccion.

Info

Publication number
ES2154565A1
ES2154565A1 ES009802091A ES9802091A ES2154565A1 ES 2154565 A1 ES2154565 A1 ES 2154565A1 ES 009802091 A ES009802091 A ES 009802091A ES 9802091 A ES9802091 A ES 9802091A ES 2154565 A1 ES2154565 A1 ES 2154565A1
Authority
ES
Spain
Prior art keywords
constriction
magnetic
status
magnetic sensor
particle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
ES009802091A
Other languages
English (en)
Other versions
ES2154565B1 (es
Inventor
Hans Heinrich Rohrer
Garcia Nicolas Garcia
Yuwen Zhao
Sanchez Manuel Munoz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fisintec S L
Original Assignee
Fisintec S L
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fisintec S L filed Critical Fisintec S L
Priority to ES9802091A priority Critical patent/ES2154565B1/es
Priority to AU62040/99A priority patent/AU6204099A/en
Priority to PCT/ES1999/000315 priority patent/WO2000022448A1/es
Priority to CNB998121754A priority patent/CN1145041C/zh
Publication of ES2154565A1 publication Critical patent/ES2154565A1/es
Application granted granted Critical
Publication of ES2154565B1 publication Critical patent/ES2154565B1/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09—Magnetoresistive devices
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

La resistencia eléctrica de una constricción magnética (M1,M2) varía si el estado magnético de uno de los lados de la constricción cambia. Esta variación de resistencia puede exceder el 100% a temperatura ambiente. Se propone usar este efecto para detectar el estado magnético de una partícula magnética pequeña, M3, como un bit magnético de almacenamiento, que afecta al estado magnético de un lado de la constricción (M1 en la Fig. 2). Se propone también leer el estado magnético de una partícula pequeña, M3, usando la partícula como un lado de la constricción
ES9802091A 1998-10-08 1998-10-08 Sensor magnetico producido por una constriccion. Expired - Lifetime ES2154565B1 (es)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES9802091A ES2154565B1 (es) 1998-10-08 1998-10-08 Sensor magnetico producido por una constriccion.
AU62040/99A AU6204099A (en) 1998-10-08 1999-10-01 Magnetic sensor produced by constriction
PCT/ES1999/000315 WO2000022448A1 (es) 1998-10-08 1999-10-01 Sensor magnetico producido por una constriccion
CNB998121754A CN1145041C (zh) 1998-10-08 1999-10-01 检测磁性收缩区磁状态的方法及其应用

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9802091A ES2154565B1 (es) 1998-10-08 1998-10-08 Sensor magnetico producido por una constriccion.

Publications (2)

Publication Number Publication Date
ES2154565A1 true ES2154565A1 (es) 2001-04-01
ES2154565B1 ES2154565B1 (es) 2001-11-01

Family

ID=8305383

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9802091A Expired - Lifetime ES2154565B1 (es) 1998-10-08 1998-10-08 Sensor magnetico producido por una constriccion.

Country Status (4)

Country Link
CN (1) CN1145041C (es)
AU (1) AU6204099A (es)
ES (1) ES2154565B1 (es)
WO (1) WO2000022448A1 (es)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4923850A (en) * 1987-10-20 1990-05-08 Thomson-Csf Superconducting DC SQUID magnetometer working in liquid nitrogen
EP0783112A2 (en) * 1996-01-02 1997-07-09 Hewlett-Packard Company Tunneling ferrimagnetic magnetoresistive sensor
WO1997047982A2 (en) * 1996-06-12 1997-12-18 Philips Electronics N.V. A magneto-resistive magnetic field sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4923850A (en) * 1987-10-20 1990-05-08 Thomson-Csf Superconducting DC SQUID magnetometer working in liquid nitrogen
EP0783112A2 (en) * 1996-01-02 1997-07-09 Hewlett-Packard Company Tunneling ferrimagnetic magnetoresistive sensor
WO1997047982A2 (en) * 1996-06-12 1997-12-18 Philips Electronics N.V. A magneto-resistive magnetic field sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BLIEK, L. et al. "A new quantum effect in the transverse magnetoresistance of two-dimensional conductors with a narrow constriction in the conducting channel." Proceedings of the International Conference, Berlin, Spring-Verlag 1987, paginas 113-17. *

Also Published As

Publication number Publication date
CN1145041C (zh) 2004-04-07
ES2154565B1 (es) 2001-11-01
CN1323398A (zh) 2001-11-21
AU6204099A (en) 2000-05-01
WO2000022448A1 (es) 2000-04-20

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