Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
Home
Hostname: page-component-ffbbcc459-2657c Total loading time: 0.155 Render date: 2022-03-03T20:50:18.637Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "useRatesEcommerce": false, "useNewApi": true }
  • English
Microscopy and Microanalysis Microscopy and Microanalysis

Article contents

Characterization of a Co-CoO Obliquely Evaporated Magnetic Tape by Analytical Electron Microscopy and Electron Holography

Published online by Cambridge University Press:  22 January 2004

Daisuke Shindo ,
Masasuke Hosokawa ,
Zheng Liu ,
Yasukazu Murakami ,
Takuya Ito ,
Yoh Iwasaki  and
Junichi Tachibana
Daisuke Shindo
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Sendai-shi 980-8577, Japan
Masasuke Hosokawa
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Sendai-shi 980-8577, Japan
Zheng Liu
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Sendai-shi 980-8577, Japan
Yasukazu Murakami
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Sendai-shi 980-8577, Japan
Takuya Ito
Affiliation:
Recording Media Company, MSNC, Sony Corporation, 3-4-1 Sakuragi, Tagajo-shi 985-0842, Japan
Yoh Iwasaki
Affiliation:
Recording Media Company, MSNC, Sony Corporation, 3-4-1 Sakuragi, Tagajo-shi 985-0842, Japan
Junichi Tachibana
Affiliation:
Recording Media Company, MSNC, Sony Corporation, 3-4-1 Sakuragi, Tagajo-shi 985-0842, Japan
Get access Rights & Permissions[Opens in a new window]

Abstract

The microstructure and magnetic domain structure of a Co-CoO obliquely evaporated tape for magnetic recording are studied by analytical electron microscopy and electron holography, respectively. While the existence of Co and CoO crystallites is confirmed by energy-filtered electron diffraction, columnar structure of the Co crystallites surrounded by the densely packed CoO crystallites is visualized by an elemental mapping method with electron energy loss spectroscopy, and the crystal orientation relation among the Co crystallites is clarified by high-resolution electron microscopy. It is found that the neighboring Co crystallites have close crystal orientations. On the other hand, electron holography reveals the magnetic flux distribution in a thin section of the tape. Although there exists the background resulting from the effect of inner potential with thickness variation, the distribution of lines of magnetic flux is found to correspond well to the recorded pattern.

Keywords

electron holographymagnetic recordingmagnetic domainmicrostructure
Type
Research Article
Information
Microscopy and Microanalysis , Volume 10 , Issue 1 , February 2004 , pp. 116 - 121
Copyright
© 2004 Microscopy Society of America

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Gau, J.S., Spahn, R.G., & Majumdar, D. (1986). The role of oxygen in oblique-deposited CoNi thin-films. IEEE Trans Magn 22, 582–584.CrossRefGoogle Scholar
Gau, J.S. & Yetter, W.E. (1987). Structure and properties of oblique-deposited magnetic thin films. J Appl Phys 61, 3807–3809.Google Scholar
Ito, T., Iwasaki, Y., Tachikawa, H., Murakami, Y., & Shindo, D. (2002a). Microstructure of a Co-CoO obliquely evaporated magnetic tape. J Appl Phys 91, 4468–4473.Google Scholar
Ito, T., Iwasaki, Y., Tachikawa, H., Murakami, Y., & Shindo, D. (2002b). Electron microscopy on Co-CoO obliquely evaporated magnetic tapes. J Magn Magn Mater 242–245, 362–365.Google Scholar
Kay, G.E., Hart, A., Parker, D.A., & Bissel, P.R. (1997). A model of an isolated column of metal evaporated tape. IEEE Trans Magn 33, 3058–3060.Google Scholar
Middleton, B.K., Miles, J.J., & Cumpson, S.R. (1996). Models of metal evaporated tape. J Magn Magn Mater 155, 266–272.CrossRefGoogle Scholar
Motohashi, K., Samoto, T., Yoshida, S., Wako, H., & Onodera, S. (2001). Magnetic activation volumes of obliquely evaporated Co-CoO tape. J Magn Magn Mater 235, 30–33.Google Scholar
Osakabe, N., Yoshida, K., Horiuchi, Y., Matsuda, T., Tanabe, H., Okuwaki, T., Endo, J., Fujiwara, H., & Tonomura, A. (1983). Observation of recorded magnetization pattern by electron holography. Appl Phys Lett 42, 746–748.CrossRefGoogle Scholar
Richter, H.J. (1993). Media requirements and recording physics for high density magnetic recording. IEEE Trans Magn 29, 2185–2201.CrossRefGoogle Scholar
Shindo, D. & Oikawa, T. (2002). Analytical Electron Microscopy for Materials Science. Tokyo: Springer-Verlag.CrossRef
Shindo, D., Park, Y.-G., Murakami, Y., Gao, Y., Kanekiyo, H., & Hirosawa, S. (2003). Electron holography of Nd-Fe-B nanocomposite magnets. Scripta Mater 48, 851–856.CrossRefGoogle Scholar
Yoshida, K., Okuwaki, T., Osakabe, N., Tanabe, H., Horiuchi, Y., Matsuda, T., Shinagawa, K., Tonomura, A., & Fujiwara, H. (1983). Observation of recorded magnetization patterns by electron holography. IEEE Trans Magn 19, 1600–1604.Google Scholar
4
Cited by

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Characterization of a Co-CoO Obliquely Evaporated Magnetic Tape by Analytical Electron Microscopy and Electron Holography
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Characterization of a Co-CoO Obliquely Evaporated Magnetic Tape by Analytical Electron Microscopy and Electron Holography
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Characterization of a Co-CoO Obliquely Evaporated Magnetic Tape by Analytical Electron Microscopy and Electron Holography
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *