• 제목/요약/키워드: Multilayers

검색결과 425건 처리시간 0.031초

SPUTTERING PRESSURE EFFECTS ON MAGNETIC ANISOTROPY IN Co/Pt MULTILAYERS

  • Kim, Jin-Hong;Shin, Sung-Chul
    • 한국자기학회지
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    • 제5권5호
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    • pp.461-464
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    • 1995
  • We have investigated the effects of sputtering Ar gas pressure on magnetic anisotropy of Co/Pt multilayers, where sputtering Ar gas pressure was varied from 2 to 20 mTorr. The surface and volume anisotropies were found to be strongly dependent on sputtering Ar gas pressure. In particular, the surface anisotropy exhibited more than fourfold enhancement as Ar pressure was decreased from 20 to 5 mTorr. We have found that the surface anisotropy was closely correlated with the low-angle x-ray diffraction intensity. We believe that these results are mainly ascribed to the variation of microstructure in the Co/Pt multilayer thin films with sputtering Ar gas pressure.

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MAGNETISM OF NANOCOMPOSITE CoSm-BASED FILMS

  • Shan, Z.S.;Liu, Y.;Jeong, S.Y.;Zhang, Y.B.;Al-Omari, I.A.;Sellmyer, D.J.
    • 한국자기학회지
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    • 제5권5호
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    • pp.702-709
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    • 1995
  • In this paper we review recent work in our laboratory on nanocomposite CoSm-based films including CoSm with Cr underlayer (CoSm//Cr), exchange-coupled magnetic films consisting of CoSm and FeCo layers (CoSm/FeCo), and CoSm multilayers with nonmagnetic spacing layers of SmO (CoSm/SmO). The emphasis is on detailed investigations of microstructure and magnetic properties for CoSm//Cr films, exchange-spring effects for CoSm/FeCo films, and interlayer effects for (CoSm/ SmO) multilayers.

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Exchange Bias Modifications in NiFe/FeMn/NiFe Trilayer by a Nonmagnetic Interlayer

  • Yoon, S.M.;Sankaranarayanan V.K.;Kim, C.O.;Kim, C.G.
    • Journal of Magnetics
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    • 제10권3호
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    • pp.99-102
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    • 2005
  • Modification in exchange bias of a NiFe/FeMn/NiFe trilayer, on introduction of a nonmagnetic Al layer at the top FeMn/NiFe interface, is investigated in multilayers prepared by rf magnetron sputtering. The introduction of Al layer leads to vanishing of bias of the top NiFe layer. But the bias for the bottom NiFe layer increases steadily with increasing Al layer thickness and attains bias (230 Oe) which is greater than that of the trilayer without the Al layer (150 Oe). When the top NiFe layer thickness is varied, exchange bias has highest value at 12 nm thickness for 1 nm thicknes of Al layer. Ion beam etching of the top NiFe layer also leads to an enhancement in bias for the bottom NiFe layer.

고전도성 투명전극인 ITO/Ag/ITO 다층박막에 관한 광학적 분석 (Optical Analysis of the ITO/Ag/ITO Multiple Layers as a Highly Conductive Transparent Electrode)

  • 윤여탁;조의식;권상직
    • 반도체디스플레이기술학회지
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    • 제18권1호
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    • pp.87-91
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    • 2019
  • As a highly conductive and transparent electrode, ITO/Ag/ITO multilayers are fabricated using an in-line sputtering method. Optimal thickness conditions have been investigated in terms of the optical transmittance and the electrical conductance. Considering the optical properties, in this study, the experimental characteristics are analyzed based on theoretical phenomena, and they are compared with the simulated results. The simulations are based on the finite-difference-time-domain (FDTD) method in solving linear Maxwell equations. Consequently, the results showed that ITO/Ag/ITO multilayer structures with respective thicknesses of 39.2 nm/10.7 nm/39.2 nm are most suitable with an average transmittance of about 87% calculated for wavelengths ranging from 400-800 nm and a sheet resistance of about $7.1{\Omega}/{\square}$.