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2005 | 108 | 1 | 127-135
Article title

EPR Study of VO^{2+} Center in Fast Proton Conductor K_3H(SO_4)_2

Content
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Languages of publication
EN
Abstracts
EN
The pretransitional phenomena of superprotonic phase transition (T_{sp}=471 K) were studied in detail by X-band continuous wave EPR spectra of K_3H(SO_4)_2 crystal doped with VO^{2+} ions. Three kinds of VO^{2+} complexes (magnetically equivalent but structurally non-equivalent) denoted as VO^{2+}(I), VO^{2+}(II), and VO^{2+}(III) were found. "Smearing out" of the superhyperfine structure was observed as a result of interbond proton motion. VO^{2+} impurity replaces K^+ ion and experiences the same average crystal field gradient at T_{sp}=471 K for I- and II-type complexes. The increase in interbond proton frequency hopping above 360 K is a reason of significant line broadening.
Keywords
EN
Year
Volume
108
Issue
1
Pages
127-135
Physical description
Dates
published
2005-07
received
2005-04-24
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv108n115kz
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