Skip to main content Accessibility help
×
Home
Hostname: page-component-78dcdb465f-vzs5b Total loading time: 0.279 Render date: 2021-04-14T18:24:04.851Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": false, "newCiteModal": false, "newCitedByModal": true }

Phase Change in (GeTe)1-x(Sb2Te3)x Investigated by Hard X-ray Photoemission Spectroscopy

Published online by Cambridge University Press:  01 February 2011

Keisuke Kobayashi
Affiliation:
koba_kei@spring8.or.jp, national Institute for Materials Science, Beamline Station, Kouto 1-1-1,, Sayo-cho, CO, 679-5198, Japan, +81 791 58 082 PHS 3386, *81 791 58 0223
Jung-Jin Kim
Affiliation:
jungjin2007.kim@samsung.com, Japan Synchrotron Radiation Research Institute, Spring 8, 1-1-1 Kouto, Sayo-Cho, Hyogo, 679-5198, Japan
Toshiyuki Matsunaga
Affiliation:
matsunaga.toshiyuki@jp.panasonic.com, Matsushita Electric Industry Co. Ltd., Characterization Technology Group, Materials Science and Analysis Technology Center, 3-1-1 Yagumo- Nakamachi,, Moriguchi, Osaka, 570-8501, Japan
Kouichi Kifune
Affiliation:
lucky\_jungjin@yahoo.co.kr, Osaka Prefecture University, Faculty of Liberal Arts and Sciences, 1-1 Gakuen-cho, Sakai, Osaka, 599-8531, Japan
Eiji Ikenaga
Affiliation:
ikenaga@spring8.or.jp, Japan Synchrotron Radiation Research Institute, Spring 8, 1-1-1 Kouto, Sayo-Cho, Hyogo, 679-5198, Japan
Masaaki Kobata
Affiliation:
m-kobata@spring8.or.jp, National Institute for Materials Science, Spring 8, 1-1-1 Kouto, Sayo-Cho, Hyogo, 679-5148, Japan
Shigonori Ueda
Affiliation:
uedas@spring8.or.jp, National Institute for Materials Science, Spring 8, 1-1-1 Kouto, Sayo-Cho, Hyogo, 679-5148, Japan
Rie Kojima
Affiliation:
yamada.noboru@jp.panasonic.com, Matsushita Electric Industrial Co., Ltd., AV Core Technology Development Center, 3-1-1 Yagumo- Nakamachi, Moriguchi, Moriguchi, Osaka, 570-8501, Japan
Noboru Yamada
Affiliation:
yamada.noboru@jp.panasonic.com, Matsushita Electric Industrial Co., Ltd., AV Core Technology Development Center, 3-1-1 Yagumo- Nakamachi, Moriguchi, Moriguchi, Osaka, 570-8501, Japan
Get access

Abstract

The mechanism of the fast reversible change between the amorphous and crystalline phases in (GeTe)1−x(Sb2Te3)x (GST) has not yet been fully understood. The crystalline phase has been identified as having a NaCl-type cubic structure with random occupation of the A sites by Ge, Sb and vacancies, and 100% occupation of B sites by Te. This fact calls our attention to a possible close relation to the inherent crystal bonding instability observed for the average five valence electrons (<5>) family. We present here the results of systematic hard X-ray photoemission experiments on GST films with various compositions in both the amorphous and crystalline phases, and discuss that a similar chemical bonding instability does indeed play an essential role in the phase change mechanism in GST. We propose a model for the fast phase change, in which 6 fold to 3 fold transition of p-like bonding play an essential role, in this class of materials.

Type
Research Article
Copyright
Copyright © Materials Research Society 2008

Access options

Get access to the full version of this content by using one of the access options below.

References

1. Kolobov, A. V. et al. , Nature Materials, 3, 703 (2004).CrossRefGoogle Scholar
2. Kohara, S. et al. , Appl. Phys. Lett., 89, 201910 (2006).CrossRefGoogle Scholar
3. Kim, J. J. et al. , Phys. Rev. B, 76, 115124 (2007).CrossRefGoogle Scholar
4.1. Kobayashi, K. et al. , Appl. Phys. Lett., 83, 1005 (2003).Google Scholar
5. Kobayashi, K. et al. , Jpn. J. Appl. Phys., 43, 1029 (2004).Google Scholar
6. Takata, Y. et al. , Appl. Phys. Lett., 84, 4310 (2004).CrossRefGoogle Scholar
7. Kobayashi, K. Nuclear Instruments and Methods in Physics Research A, 547, 98 (2005).CrossRefGoogle Scholar
8. Akola, J. and Jones, R. O. Phys. Rev. B 76, 235201 (2007).CrossRefGoogle Scholar
9. Lucovsky, G. and White, R. M. Phys. Rev. B, 8, 660 (1973).Google Scholar
10. Kobayashi, K. L. I. Kato, Y. and Komatsubara, K. F. Prog. Cryst. Growth Charact., 1, 117 (1978).Google Scholar
11. Suski, T. Karpinski, J. Kobayashi, K. L. I., and Komatsubara, K. F. J. Phys. Chem. Solids 42, 479482 (1981).CrossRefGoogle Scholar

Full text views

Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views.

Total number of HTML views: 0
Total number of PDF views: 6 *
View data table for this chart

* Views captured on Cambridge Core between September 2016 - 14th April 2021. This data will be updated every 24 hours.

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.

Phase Change in (GeTe)1-x(Sb2Te3)x Investigated by Hard X-ray Photoemission Spectroscopy
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.

Phase Change in (GeTe)1-x(Sb2Te3)x Investigated by Hard X-ray Photoemission Spectroscopy
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.

Phase Change in (GeTe)1-x(Sb2Te3)x Investigated by Hard X-ray Photoemission Spectroscopy
Available formats
×
×

Reply to: Submit a response


Your details


Conflicting interests

Do you have any conflicting interests? *