• Title/Summary/Keyword: 거대자기저항

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Substrate-induced Magnetic Anisotropy and GMR Effects in Cu/Co Multilayers (Cu/CO 다층 박막에서의 거대 자기 저항과 자기 비등방성)

  • Park, C.M.
    • Journal of the Korean Magnetics Society
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    • v.13 no.6
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    • pp.243-245
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    • 2003

  • The anomalous angular modulation of magnetoresistance in Co/Cu multilayers is explained assuming substrate-induced magnetic anisotropy. The magnetic parameters of Co/Cu multilayers is determined using angular modulation of magnetoresistance and theoretical model including substrate-induced anisotropy. This mechanism introduces a new possible way of modulating the giant magnetoresistance.

  • https://doi.org/10.4283/JKMS.2003.13.6.243 인용 PDF KSCI

철을 미량 치환한 $La_{0. 67}Ba_{0.33}Mn_{1-x}^{57}Fe_xO_3$ (x=0.0, 0.005, 0.01)물질의 자기적 및 중성자 회절연구

  • 최강룡;안근영;심인보;김철성
    • Proceedings of the Korean Magnestics Society Conference
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    • 2002.12a
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    • pp.102-103
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    • 2002

  • LaMnO$_3$에 Ca을 치환한 Mn계 perovskite 구조(ABO3)의 물질에서 초거대자기저항 현상이 발견된 이후 R$_{1-x}$$^{3+}$ A$_{x}$$^{2+}$MnO$_3$(R=La, Nd, Pr: 희토류금속, A=Ca, Sr, Ba, Cd, Pb; 2가 양이온)계의 Mn 산화물의 연구가 고감도 자기 저항 센서와 자기기록 등의 활용가능성을 중심으로 활발히 진행되고 있다. 자기적 특성이 뛰어난 초거대자기저항물질에 대한 미시적인 자성에 대한 연구는 그 메커니즘이 복잡하고 다양한 접근방식에 따른다. (중략)

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Characteristics of Mineral Mg Dissolving Sensor in Edible Water using GMR-SV Device (거대자기저항 스핀밸브 소자를 이용한 음용수 미네랄 Mg 용해센서 특성 연구)

  • Lee, Ju-Hee;Kim, Da-Woon;Kim, Min-Ji;Park, Kwang-Seo;Kang, Joon-Ho;Lee, Sang-Suk
    • Journal of the Korean Magnetics Society
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    • v.18 no.5
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    • pp.174-179
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    • 2008

  • The measurement dissolution sensor system using GMR-SV device with magnetic sensitivity of 0.8 %/Oe and Mg-film thick of 200 nm and Mg-foil thick of 50 mm was fabricated and characterized. During the water dissolving process of Mg-film and Mg-foil, the subtle variation of magnetic field by the decrease of current in solenoid was detected by the GMR-SV sensor. The variations of Mg bubble number and ORP as a function of time for three different kinds of edible, tap, and distilled water, are measured and compared. A After 45 min, the speed of fast dissolving Mg was shown the order of edible > tap > DI water. The variation of output magnetoresistance as a function of dissolved time of Mg-film and Mg-foil for edible water, which is composed of mineral content of $0.8{\sim}5.4\;mg/l$ was investigated. The response times for the dissolution in edible water were 5 min and 20 min, respectively. From the measurement of dissolving time and speed for Mg-film and Mg-foil using GMR-SV device, the mineral Mg sensor system in edible water can be possible to develop.

  • https://doi.org/10.4283/JKMS.2008.18.5.174 인용 PDF KSCI

A Study on the Characteristics of Giant Magneto Resistance using Multi Layers (다층막을 이용한 거대자기저항(GMR)의 특성 연구)

  • Kim, Byeong-Woo;Lee, Young-Seok
    • Transactions of the Korean Society of Automotive Engineers
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    • v.16 no.5
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    • pp.113-118
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    • 2008

  • We have developed an integrated giant magneto resistance using not only circuit but also integrating technique with semiconductor for automobile application. It has four elements used for giant magneto resistance sensor. Ni-Fe/Cu multi layers were prepared on a glass substrate by magnetron sputtering. The dependence of magneto resistance on the thickness of the Ni-Fe and Cu layers was investigated. The MR ratio showed a saturated a peak at Cu layer $10{\AA}$, Ni-Fe layer $50{\AA}$, where the MR ratio is about 8.7% at room temperature. By means of Ni-Fe multi film and specific integrating technique, these new giant magneto resistance sensor showed excellent resistance characteristics.

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