WO2009050814A1 - Polarization direction detector for ferroelectric material and method of detecting polarization direction - Google Patents

Polarization direction detector for ferroelectric material and method of detecting polarization direction Download PDF

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Publication number
WO2009050814A1
WO2009050814A1 PCT/JP2007/070373 JP2007070373W WO2009050814A1 WO 2009050814 A1 WO2009050814 A1 WO 2009050814A1 JP 2007070373 W JP2007070373 W JP 2007070373W WO 2009050814 A1 WO2009050814 A1 WO 2009050814A1
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WO
WIPO (PCT)
Prior art keywords
polarization direction
signal
ferroelectric material
resonant circuit
probe
Prior art date
Application number
PCT/JP2007/070373
Other languages
French (fr)
Japanese (ja)
Inventor
Kiyoshi Tateishi
Takanori Maeda
Tomotaka Yabe
Original Assignee
Pioneer Corporation
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 Pioneer Corporation filed Critical Pioneer Corporation
Priority to PCT/JP2007/070373 priority Critical patent/WO2009050814A1/en
Publication of WO2009050814A1 publication Critical patent/WO2009050814A1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/08—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by electric charge or by variation of electric resistance or capacitance
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/02—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using ferroelectric record carriers; Record carriers therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/06—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electrical capacitance; Record carriers therefor
    • G11B9/07—Heads for reproducing capacitive information
    • G11B9/075—Heads for reproducing capacitive information using mechanical contact with record carrier, e.g. by stylus

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  • Measurement Of Resistance Or Impedance (AREA)

Abstract

A polarization direction detector for a ferroelectric material which includes at least one probe which should be disposed in contact with or in the vicinity of the surface of a ferroelectric material, and an electric field applying means for applying an alternating electric field to a capacitor component immediately below the probe inside the ferroelectric material, and which detects the polarization direction of the ferroelectric material immediately below the probe based on a change in electrostatic capacity of the capacitor component accompanying the application of the alternating electric field. The polarization direction detector also includes a resonant circuit including a capacitor component, a reference phase oscillator for applying a high-frequency AC signal to the resonant circuit, a phase comparing means for generating a phase difference signal having a signal level in accordance with a phase difference between a resonant signal extracted from the resonant circuit with the application of the high-frequency AC signal to the resonant circuit and the high-frequency AC signal, and a synchronous detecting means which synchronously detects the phase difference signal based on a synchronous signal and generates a polarization direction detection signal corresponding to the polarization direction immediately below the probe inside the ferroelectric material.
PCT/JP2007/070373 2007-10-18 2007-10-18 Polarization direction detector for ferroelectric material and method of detecting polarization direction WO2009050814A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/070373 WO2009050814A1 (en) 2007-10-18 2007-10-18 Polarization direction detector for ferroelectric material and method of detecting polarization direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/070373 WO2009050814A1 (en) 2007-10-18 2007-10-18 Polarization direction detector for ferroelectric material and method of detecting polarization direction

Publications (1)

Publication Number Publication Date
WO2009050814A1 true WO2009050814A1 (en) 2009-04-23

Family

ID=40567106

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/070373 WO2009050814A1 (en) 2007-10-18 2007-10-18 Polarization direction detector for ferroelectric material and method of detecting polarization direction

Country Status (1)

Country Link
WO (1) WO2009050814A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS568563A (en) * 1979-07-02 1981-01-28 Toshiba Corp Measuring device for reactance change
JPH08307199A (en) * 1995-01-11 1996-11-22 Yoshiro Tomikawa Capacitive component reduction circuit for electrostatic conversion means and driver and detector for electrostatic conversion means
JP2002323431A (en) * 2001-02-26 2002-11-08 Seiko Instruments Inc Scanning nonlinear permittivity microscope for measuring higher order nonlinear permittivity
JP2005502886A (en) * 2001-09-10 2005-01-27 パイオニア株式会社 Dielectric constant measuring apparatus, dielectric measuring method, and information recording / reproducing apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS568563A (en) * 1979-07-02 1981-01-28 Toshiba Corp Measuring device for reactance change
JPH08307199A (en) * 1995-01-11 1996-11-22 Yoshiro Tomikawa Capacitive component reduction circuit for electrostatic conversion means and driver and detector for electrostatic conversion means
JP2002323431A (en) * 2001-02-26 2002-11-08 Seiko Instruments Inc Scanning nonlinear permittivity microscope for measuring higher order nonlinear permittivity
JP2005502886A (en) * 2001-09-10 2005-01-27 パイオニア株式会社 Dielectric constant measuring apparatus, dielectric measuring method, and information recording / reproducing apparatus

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