SU834750A1 - Method of measuring magnetic record carrier coercive force - Google Patents
Method of measuring magnetic record carrier coercive force Download PDFInfo
- Publication number
- SU834750A1 SU834750A1 SU792808105A SU2808105A SU834750A1 SU 834750 A1 SU834750 A1 SU 834750A1 SU 792808105 A SU792808105 A SU 792808105A SU 2808105 A SU2808105 A SU 2808105A SU 834750 A1 SU834750 A1 SU 834750A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- magnetic
- recording
- coercive force
- magnetization
- head
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
- G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
Landscapes
- Measuring Magnetic Variables (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Description
(54) СПОСОБ ИЗМЕРЕНИЯ КОЭРЦИТИВНОЙ- СИЛЫ МАГНИТНОГО сНОСИТЕЛЯ ЗАПИСИ(54) METHOD OF MEASUREMENT OF COERTSIVE-POWER OF A MAGNETIC INTERVIEWER
1one
Изобретение относитс к приборостроению , а именно к технике магнитной записи.The invention relates to instrumentation, in particular to a magnetic recording technique.
Известен.способ измерени коэрци тивной силы магнитных материалов посредством введени измер емого образца в полость датчика магнитного пол содержащего сердечник из немагнитного материала и катушку из провода, электрическое сопротивление которого зависит отмагнитного пол IJ.The known method for measuring the coercive force of magnetic materials by introducing the measured sample into the sensor cavity of the magnetic field containing a core of non-magnetic material and a coil of wire, whose electrical resistance depends on the magnetic field IJ.
Этот метод можно примен ть дл измерени коэрцитивной силы носител записи только косвенно, определ магнитные параметры образца-двойника изготовленного при тех же услови х, что и носитель.This method can be used to measure the coercive force of the recording medium only indirectly, determining the magnetic parameters of the twin specimen manufactured under the same conditions as the carrier.
Известен также способ измерени коэрцитивной силы магнитного носител записи путем перемагничивани исследуемого участка магнитной головкой записи и последуккдей регистрации результатов измерени в магнитной головке воспроизведени 2j.There is also known a method for measuring the coercive force of a magnetic recording medium by reversing the area under study with a magnetic recording head and recording the measurement results in a magnetic reproduction head 2j.
Такой способ позвол ет измер ть усредненное значение коэрцитивной силы носител записи вдоль дорожки записи, так как магнитные головки записи и воспроизведени разнесены на значительное рассто ние.Such a method allows one to measure the averaged value of the coercive force of the recording medium along the recording track, since the magnetic recording and playback heads are spaced apart by a considerable distance.
Цель изобретени обеспечение локального определени коэрцитивной силы в любой точке магнитного . носител .The purpose of the invention is to provide a local determination of the coercive force at any magnetic point. carrier.
Поставленна цель достигаетс тем, что производ т перемагничивание исследуемого участка носител записи с помощью комбинированной магниторезпстивной магнитной головки, а The goal is achieved by reversal of the investigated section of the recording medium using a combined magnetoresistive magnetic head, and
0 затем регистрируют экспериментальную зависимость выходного напр жени магниторезистивного элемента от напр женности магнитного пол в момент характерного скачка, соответ5 ствувоцего перебросу намагниченности.0 then, the experimental dependence of the output voltage of the magnetoresistive element on the magnetic field strength at the time of the characteristic jump, corresponding to a significant reversal of magnetization, is recorded.
Дл достижени указанной цели необходимо установить комбинированную пленочную магниторезистивную магнитную головку на исследуемом участке To achieve this goal, it is necessary to install a combined film magnetoresistive magnetic head in the test area.
0 магнитного носител . Дальше магнитным полем головки записи в комбинированной головке производ т намагничивание рассматриваемой области носител до насыщени , пропуска через 0 magnetic media. Further, the magnetic field of the recording head in the combined head magnetizes the considered carrier region to saturation, passes through
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792808105A SU834750A1 (en) | 1979-07-02 | 1979-07-02 | Method of measuring magnetic record carrier coercive force |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792808105A SU834750A1 (en) | 1979-07-02 | 1979-07-02 | Method of measuring magnetic record carrier coercive force |
Publications (1)
Publication Number | Publication Date |
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SU834750A1 true SU834750A1 (en) | 1981-05-30 |
Family
ID=20845666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792808105A SU834750A1 (en) | 1979-07-02 | 1979-07-02 | Method of measuring magnetic record carrier coercive force |
Country Status (1)
Country | Link |
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SU (1) | SU834750A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6661223B2 (en) | 2002-01-07 | 2003-12-09 | International Business Machines Corporation | Method of testing for response abnormalities in a magnetic sensor |
-
1979
- 1979-07-02 SU SU792808105A patent/SU834750A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6661223B2 (en) | 2002-01-07 | 2003-12-09 | International Business Machines Corporation | Method of testing for response abnormalities in a magnetic sensor |
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