SU446003A1 - Method for measuring the intensity of the starting field of a magnetic film - Google Patents

Method for measuring the intensity of the starting field of a magnetic film

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Publication number
SU446003A1
SU446003A1 SU1873100A SU1873100A SU446003A1 SU 446003 A1 SU446003 A1 SU 446003A1 SU 1873100 A SU1873100 A SU 1873100A SU 1873100 A SU1873100 A SU 1873100A SU 446003 A1 SU446003 A1 SU 446003A1
Authority
SU
USSR - Soviet Union
Prior art keywords
intensity
measuring
field
magnetic
magnetic film
Prior art date
Application number
SU1873100A
Other languages
Russian (ru)
Inventor
Борис Михайлович Абакумов
Original Assignee
Предприятие П/Я В-8584
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 Предприятие П/Я В-8584 filed Critical Предприятие П/Я В-8584
Priority to SU1873100A priority Critical patent/SU446003A1/en
Application granted granted Critical
Publication of SU446003A1 publication Critical patent/SU446003A1/en

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Description

Изобретение относитс  к измерительной технике, а именно к способам определени  магнитных свойств материалов.The invention relates to a measurement technique, in particular, to methods for determining the magnetic properties of materials.

Известен способ измерени  напр женности стартового пол  магнитных пленок с полосовой доменной структурой, заключающийс  в том, что пленку с размещенной на ней сигнальной катуи1кой насыщают в магнитном поле в направлении полосовых доменов и после сн ти  насыщающего пол  прикладывают вращающее магнитное поле, напр женность которого повышают до тех пор, пока флюксметр , подсоединенный к измерительной катушке, не отметит по вление посто нной составл ющей сигнала. Отмеченную при этом, напр женность магнитного пол  принимают за величину напр женности стартового пол .There is a known method for measuring the intensity of the starting field of magnetic films with a strip domain structure, which means that the film with a signal band placed on it is saturated in a magnetic field in the direction of the strip domains and after removing the saturating field a rotating magnetic field is applied, the intensity of which is increased as long as the fluxmeter connected to the measuring coil does not notice the appearance of a constant component of the signal. The magnetic field strength noted in this case is taken as the magnitude of the strength of the starting field.

Недостаток известного способа заключаетс  в невысокой точности измерени  из-за сложности измерени  малых величин токов.The disadvantage of this method lies in the low accuracy of measurement due to the difficulty of measuring small currents.

Целью изобретени   вл етс  повышение точности измерени .The aim of the invention is to improve the measurement accuracy.

С этой целью об изменении магнитного состо ни  пленки суд т по изменению индуктивности системы катуша - пленка.For this purpose, the change in the magnetic state of the film is judged by the change in the inductance of the coil-film system.

Индуктивность системы катушка - пленка  вл етс  суммой двух величин: неизменной индуктивности 5 самой катушки и индуктивности, вносимой в систему магнитной пленкой и завис щей от ее магнитного состо ни .The inductance of a coil-film system is the sum of two quantities: the constant inductance 5 of the coil itself and the inductance introduced by the magnetic film in the system and dependent on its magnetic state.

Способ измерени  состоит в 0 следующем.The measurement method is as follows.

Ешенку насыщают магнитным полем в направлении полосовых доменов. Затем поле снимают и измер ют значение индуктивности.Eshenka is saturated with a magnetic field in the direction of stripe domains. The field is then removed and the inductance value is measured.

Далее перпендинул р о направлению полосовых доменов прикладывают магнитное поле, величину которого ступенчато увеличивают от нул . После  аждрго воздействи  на магнитную пленву магнитным полем это поле снимают и измер ют индуктивность . Как только величина напр женности магнитного пол  достигает величины напр женности пол ; старта, происходит поворот полосовых доменов на некоторый угол относительно исходного состо ни , сохран ющийс  после сн ти  пол , и изменение величины индуктивности системы катушка - пленка. Величину напр женности магнитного пол , при которой происходит изменение индуктивности системы.Next, the perpendicular p about the direction of the strip domains apply a magnetic field, the magnitude of which increases in steps from zero. After the magnetic field is influenced by the magnetic field, this field is removed and the inductance is measured. As soon as the magnitude of the intensity of the magnetic field reaches the value of the intensity of the field; start, the strip domains rotate at a certain angle relative to the initial state, retained after the field is removed, and the change in the value of the inductance of the coil-film system. The magnitude of the magnetic field strength at which the inductance of the system changes.

принимают за величину напр женности стартового пол .take for the magnitude of the intensity of the starting floor.

ПРЕДМЕТ ИЗОБРЕТЕНИЯSUBJECT OF INVENTION

Способ измерени  напр женности стартового пол  магнитной пленки, заключаю{цийс  в предварительном насыщении ее в направлении полосовых доменов и определении изменени  магнитного состо ни  пленки под воздействием магнитного пол , приложенного перпендикул рно направлению полосовых доменов, отличающийс  тем, что, с целью повышени  точности измерени , об изменении магнитного состо ни  пленки суд т по изменению индуктивности системы катушка - пленка.The method of measuring the intensity of the starting field of a magnetic film consists in pre-saturating it in the direction of the strip domains and determining the change in the magnetic state of the film under the influence of a magnetic field applied perpendicular to the direction of the strip domains, in order to improve the measurement accuracy The change in the magnetic state of the film is judged by the change in inductance of the coil-film system.

SU1873100A 1973-01-22 1973-01-22 Method for measuring the intensity of the starting field of a magnetic film SU446003A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1873100A SU446003A1 (en) 1973-01-22 1973-01-22 Method for measuring the intensity of the starting field of a magnetic film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1873100A SU446003A1 (en) 1973-01-22 1973-01-22 Method for measuring the intensity of the starting field of a magnetic film

Publications (1)

Publication Number Publication Date
SU446003A1 true SU446003A1 (en) 1974-10-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1873100A SU446003A1 (en) 1973-01-22 1973-01-22 Method for measuring the intensity of the starting field of a magnetic film

Country Status (1)

Country Link
SU (1) SU446003A1 (en)

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