Mössbauer spectroscopic study of iodine-intercalated Bi2Sr2CaCu2O
y |
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| Authors: | M Seto S Kitao Yu Maeda D Pooke Y Kotaka K Kishio |
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| Institution: | (1) Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, 590-04 Osaka, Japan;(2) Industrial Research Ltd., P.O. Box 31310, Lower Hutt, New Zealand;(3) Department of Industrial Chemistry, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113 Tokyo, Japan |
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| Abstract: | Iodine-intercalated high-T
c oxide Bi2Sr2CaCu2O
y
was studied at 16 K using129I Mössbauer effect. The Mössbauer spectrum shows the presence of I
3
–
ions which have an almost linear structure and a symmetrical charge population, and no other iodine species are found. In addition to the electronic structure of each iodine species, the analysis of the intensity ratios of the quadrupole-split transitions reveals information about the anisotropy of the recoilless fraction for each iodine atom. It cannot exclude the possibility that the I
3
–
ion is slightly asymmetrical and/or bent with consideration to small interactions between the I
3
–
ion and the neighboring Bi-O layers. |
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| Keywords: | |
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