• Title/Summary/Keyword: 자기터널접합

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Improvement of Magnetic Transport Properties in Bottom-Type Pinning MgO Magnetic Tunnel Junctions with NiFeSiB/CoFeB Hybrid Free Layer (NiFeSiB / CoFeB 하이브리드 자유층을 사용한 자기터널접합구조에서 Bottom-Type Pinnning MgO 터널 배리어 두께변화에 따른 자기 저항비 증진 연구)

  • Kim, Do-Hyeong;Jo, Ji-Ung;Kim, Do-Gyun;Tan, Reasmey;Isogami, Shinji;Tsunoda, Masakiyo;Takahashi, Migaku;Kim, Yeong-Geun
    • Proceedings of the Korean Magnestics Society Conference
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    • 2009.05a
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    • pp.121-122
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    • 2009

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Patent Analysis of MRAM Technology (차세대 자기저항메모리 MRAM 기술의 특허동향 분석)

  • Noh, S.J.;Lee, J.S.;Cho, J.U.;Kim, D.K.;Kim, Y.K.;Yoo, Y.M.;Ha, M.Y.;Seo, J.W.
    • Journal of the Korean Magnetics Society
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    • v.19 no.1
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    • pp.35-42
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    • 2009

  • Among the next generation memory, MRAM (Magnetic Random Access Memory) is worthy of notice for substituting the preexisting memory thanks to its non-volatile property and other advantages. Recently perpendicular MRAM and spin transfer torque MRAM techniques are under active investigation to realize a high density and low power consumption. As a result, there are increasing of patents applications for high density, low current density for magnetization switching and high thermal stability. In this paper, we analyze the trend of patent applications and registrations about MRAM and propose a direction of future investigation.

  • https://doi.org/10.4283/JKMS.2009.19.1.035 인용 PDF KSCI

Large Magneto-Resistance in Magnetite Nanoparticles (마그네타이트 극미세 나노입자의 자기저항 현상)

  • Jang, Eun-Young;Lee, Nyun-Jong;Choi, Deung-Jang;Kim, Tae-Hee
    • Journal of the Korean Magnetics Society
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    • v.18 no.4
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    • pp.154-158
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    • 2008

  • Magnetite($Fe_3O_4$) is currently one of key materials for applications in magnetic storage and many bioinspired applications because bulk $Fe_3O_4$ has a high Curie temperature($Tc={\sim}850K$) and nearly full spin polarization at room temperature(RT). In this work, $Fe_3O_4$ nanoparticles with different sizes of 12 to 15 nm were prepared in a well-controlled manner by a nonhydrolytic synthetic method. Here, we report the significant intergrain magneto-resistance(MR) of ${\sim}2%$ at RT in $Fe_3O_4$ nanoparticle pellets. The tunneling conductance was also investigated based on the Brinkman model, as well. Our results show clearly that the surface or interfacial property of the particles plays a crucial role in the MR effect.

  • https://doi.org/10.4283/JKMS.2008.18.4.154 인용 PDF KSCI