• Title/Summary/Keyword: Ion-milling

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Technical Overview on the Electron Backscattered Diffraction Sample Preparation

  • Kim, Dong-Ik;Kim, Byung-Kyu;Kim, Ju-Heon
    • Applied Microscopy
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    • v.45 no.4
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    • pp.218-224
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    • 2015
  • A technical overview on the various sample preparation methods for electron backscattered diffraction (EBSD) analysis is carried out. The mechanical polishing with colloidal silica finish, electro-chemical polishing, dual layer coating and ion beam milling are introduced for the common sample preparation methods for EBSD observation and some issues that are frequently neglected by the common EBSD users but should be considered to get a reliable EBSD data are discussed. This overview would be especially helpful to the people who know what EBSD technique is but do not get a reliable EBSD data because of difficulties in sample preparation.

Cross-sectional TEM Specimens Priparation of Precisely Selected Regions of Semiconductor Devices using Focused Ion Beam Milling

  • Kim, Jeong-Tae;Kim, Ho-Jeong;Jo, Yun-Seong;Choe, Su-Han
    • Korean Journal of Materials Research
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    • v.3 no.2
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    • pp.193-196
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    • 1993
  • A procedure for preparing cross-sectional specimens for transmission electron microscopy(TEM)by focused ion beam(FIB)milling of specific regions of semiconductor devices is outlined. This technique enables TEM specimens to be pripared at precisely preselected area. In-situ #W thin film deposition on the top surface of desired site is complementally used to secure the TEM specimens to be less wedge shaped, which is main shortcoming of previous FIB-assisted TEM sample preparation technique. This technique is quite useful for the TEM sample priparation for fault finding and the characterization of fabrication process associated with submicron contact technologies.

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Sample Preparation for EBSD Analysis: Tips for Metals with Delicate Surfaces (표면처리가 어려운 금속재료의 EBSD 분석을 위한 시편 준비)

  • Kang, Joo-Hee;Kim, Su-Hyeon
    • Korean Journal of Metals and Materials
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    • v.48 no.8
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    • pp.730-740
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    • 2010
  • Aluminum, magnesium, titanium and high Mn steel are difficult to use in electron backscatter diffraction (EBSD) sample preparation due to the formation of an oxidation layer under conventional polishing. Alcohol-based polishing with colloidal silica suspension was introduced for these delicate samples. A hard particle-embedded sample was analyzed successfully using mechanical polishing. Ion-milling was effective in removing oxidized, deformed and transformed layers after mechanical polishing and was able to reduce artifacts significantly. The microstructure of a cross-section of a thin copper film was evaluated by attachment of a dummy to the film for mechanical polishing.

Using Electron-beam Resists as Ion Milling Mask for Fabrication of Spin Transfer Devices

  • Nguyen Hoang Yen Thi;Yi, Hyun-Jung;Shin, Kyung-Ho
    • Journal of Magnetics
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    • v.12 no.1
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    • pp.12-16
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    • 2007
  • Magnetic excitation and reversal by a spin polarized current via spin transfer have been a central research topic in spintronics due to its application potential. Special techniques are required to fabricate nano-scale magnetic layers in which the effect can be observed and studied. This work discusses the possibility of using electron-beam resists, the nano-scale patterning media, as ion milling mask in a subtractive fabrication method. The possibility is demonstrated by two resists, one positive tone, the ZEP 520A, and one negative tone, the ma-N2403. The advantage and the key points for success of this process will be also addressed.