Instability of some divalent rare earth ions and photochromic effect
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- 作者：A.V. Egranova ; b ; alegra@igc.irk.ru" class="auth_mail" title="E-mail the corresponding author ; T.Yu. Sizovaa ; R.Yu. Shendrika ; b ; N.A. Smirnovaa
- 关键词：Instability ; Divalent rare earth ions ; Alkaline earth fluorides ; Jahn&ndash ; Teller effect ; Radiation defects
- 刊名：Journal of Physics and Chemistry of Solids
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：90
- 期：Complete
- 页码：7-15
- 全文大小：817 K
文摘
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The divalent rare-earth ions (La Ce Gd Tb Lu and Y) are unstable d ground state of divalent ions (La Ce Gd Tb Lu and Y) is located in conduction band.
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The formation of the stable divalent ions in alkaline earth fluorides during x-ray irradiation occurs via the formation of charged anion vacancies near divalent ions.
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Photochromic effect occurs under electron transfer from divalent ion to anion vacancy.