KR930006455A - Magnetization measuring device - Google Patents

Magnetization measuring device Download PDF

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Publication number
KR930006455A
KR930006455A KR1019910016253A KR910016253A KR930006455A KR 930006455 A KR930006455 A KR 930006455A KR 1019910016253 A KR1019910016253 A KR 1019910016253A KR 910016253 A KR910016253 A KR 910016253A KR 930006455 A KR930006455 A KR 930006455A
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KR
South Korea
Prior art keywords
sample
magnetization
magnetic field
coils
output
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Application number
KR1019910016253A
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Korean (ko)
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KR950000744B1 (en
Inventor
이용호
Original Assignee
이용호
남재도
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Publication date
Application filed by 이용호, 남재도 filed Critical 이용호
Priority to KR1019910016253A priority Critical patent/KR950000744B1/en
Publication of KR930006455A publication Critical patent/KR930006455A/en
Application granted granted Critical
Publication of KR950000744B1 publication Critical patent/KR950000744B1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00Arrangements or instruments for measuring magnetic variables
    • G01R33/20Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28Details of apparatus provided for in groups G01R33/44 - G01R33/64

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  • Physics & Mathematics (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

본 발명은 자성체에 외부 자기장 H를 인가할때 자성체에 생기는 자화량I를 측정하는 것으로, 특히 자화된 미소질양의 자성체 시료의 자화방향에 수직하게 교류의 미소자기자을 인가할때 시료에 발생되는 토오코를 압전센서로 측정하여 자화량을 측정하는 장치로서 조자깅 용이하고, 감도가 매우 높으며, 시료 교체가 용이하고, 대단히 경제적인 것이다.The present invention measures the amount of magnetization I generated in a magnetic body when an external magnetic field H is applied to the magnetic body. In particular, a toco generated in a sample when applying an alternating micro-magnetic field perpendicular to the magnetization direction of the magnetized microporous magnetic sample. It is a device for measuring the magnetization amount by measuring the piezoelectric sensor. It is easy to jog, very sensitive, easy to replace the sample, and very economical.

Description

자화 측정 장치Magnetization measuring device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 전체 구성도1 is an overall configuration diagram of the present invention

제2도는 제1도의 요부를 보인 정면도2 is a front view showing the main part of FIG.

제3도는 (가)(나)는 압전센서부(5)의 평면도 및 정면도3 is a plan view and a front view of the piezoelectric sensor unit 5.

Claims (2)

시료자화용 전자석(M)이 자화코일(C1)(C2)의 중심부에 자성체인 원판 또는 구형의 시료(S)를 배치하고, 상기한 자화코일(C1)(C2)의 측에 연직하게;토오크발생용 헬므홀츠코일(F1)(F2)을 배치하고, 상기 시료(S)에 연결봉(T)으로 압전센서부(5)를 연결구성하되, 삼각파 발진기(1)의 출력신호는 직류증폭기 (2)를 통과하여 상기한 자화코일(C1)(C2)에 공급하여 시료자화용 자기장(H)를 상기 시료(S)에 인가하고, 시료구동용 발진기(3)의정현파는 교류 증폭기(4)를 통과하여 상기한 토오크 발생용 헬므홀크코일(F1)(F2)에 공급하여 상기한 시료(S)에 교류자기장(Ha)를 인가하여서 상기한 시료(S)에는 토오크(L)가 발생하며, 이때 교류전류 주파수는 압전센서부(5)의 공진고유 주파수와 일치되도록 하여 공진을 발생시켜 감도를 향상시키고,상기한 토오크(L)는 연결봉(T)에 연결된 압전센서부(5)에 의해 전기신호로 변환되어 순차적으로 전치증폭기(6)를 경유하여 잡음제거를 위한 동조증폭기(7)와 (+),(-) 극성의 전압으로 변환되는 위상검파기(8)과 고조파 교류 성분을 제거하기 위한 저역통과 필터(9)를 통과하여 출력단자Mo로 출력하고, 상기한 시료 S에 놓인 홀소자 G에 의해 측정된 교류자기장(Ha)신호는 가우스 메터(10)으로 검출되어 출력단자(Ho)로 출력되는 것을 특징으로 하는 자화측정장치The magnetization electromagnet M places a disc or spherical sample S, which is a magnetic material, in the center of the magnetization coils C1 and C2, and is perpendicular to the magnetization coils C1 and C2. Arrange the generating Helmholtz coils (F1) (F2), and connect the piezoelectric sensor unit (5) with the connecting rod (T) to the sample (S), but the output signal of the triangular wave oscillator (1) is a direct current amplifier (2). And the magnetic field coil (H) is applied to the sample (S) by supplying the magnetization coils (C1) and (C2). The sine wave of the oscillator (3) for driving the sample causes the AC amplifier (4). After passing through and supplying the above-mentioned torque generating helmholcoil (F1) (F2) to apply an alternating magnetic field (Ha) to the sample (S), the torque (L) is generated in the sample (S), wherein The alternating current frequency is matched with the resonance intrinsic frequency of the piezoelectric sensor unit 5 to generate resonance to improve sensitivity, and the torque L is connected to the connecting rod T. A phase detector 8 which is converted into an electrical signal by the pre-sensor part 5 and sequentially converted to a tuning amplifier 7 for removing noise and a voltage of (+) and (-) polarity through the preamplifier 6. ) And the low pass filter (9) for removing the harmonic alternating current component and output to the output terminal Mo, and the AC magnetic field (Ha) signal measured by the Hall element G placed in the sample S is a Gaussian (10). Is detected and output to the output terminal Ho, characterized in that the magnetization measuring device 제1항에 있어서, 상기한 압전센서부(5)는 절연용 원형 고정판(11)의 내면에 고무판(18)를 부설하며, 상기고정판(11)에 대항하는 절연용 원형 회전판(12)의 내면에 고무판(19)를 부설하여서 압전센서(16)(17)를 지지하고, 상기한 각 고정판(11)과 회전판(12)간의 내측부에 인청동판(13)(14)(15)를 지지하고,상기한 회전판(12)의 외면에 연결된 연결봉(T)의 단부에 시료지지기(20)(21)를 부설하여 된 것을 특징으로 하는 자화 측정장치According to claim 1, wherein the piezoelectric sensor portion 5 is provided with a rubber plate 18 on the inner surface of the circular fixing plate 11 for insulation, the inner surface of the circular rotating plate 12 for insulation against the fixing plate 11 A rubber plate 19 is placed on the platen to support the piezoelectric sensors 16 and 17, and to support the phosphor bronze plates 13, 14 and 15 on the inner side between the fixing plates 11 and the rotating plate 12, The magnetization measuring device, characterized in that the sample supporter 20, 21 is provided at the end of the connecting rod (T) connected to the outer surface of the rotating plate (12) ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910016253A 1991-09-18 1991-09-18 Apparatus for measuring magnetization KR950000744B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910016253A KR950000744B1 (en) 1991-09-18 1991-09-18 Apparatus for measuring magnetization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910016253A KR950000744B1 (en) 1991-09-18 1991-09-18 Apparatus for measuring magnetization

Publications (2)

Publication Number Publication Date
KR930006455A true KR930006455A (en) 1993-04-21
KR950000744B1 KR950000744B1 (en) 1995-01-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100348881B1 (en) * 2000-12-22 2002-08-17 한국전기연구원 Jig for measuring electro-magnetic characteristics of electromagnetic material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111487523B (en) * 2020-04-29 2021-04-06 江苏七维测试技术有限公司 Hall sensor testing method for carrying IC tester

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100348881B1 (en) * 2000-12-22 2002-08-17 한국전기연구원 Jig for measuring electro-magnetic characteristics of electromagnetic material

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Publication number Publication date
KR950000744B1 (en) 1995-01-28

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