کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10637167 | 993850 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
EPR and FT-IR spectroscopic studies of B2O3Bi2O3MnO glasses
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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![عکس صفحه اول مقاله: EPR and FT-IR spectroscopic studies of B2O3Bi2O3MnO glasses EPR and FT-IR spectroscopic studies of B2O3Bi2O3MnO glasses](/preview/png/10637167.png)
چکیده انگلیسی
EPR and FT-IR absorption measurements performed on xMnOâ
(100âx)[B2O3â
Bi2O3] glasses with 0⩽x⩽50 mol% are reported. The EPR spectra of all investigated samples exhibit resonance signals that are characteristic for the Mn2+ ions. For x⩽20 mol% the spectra consists of two resonance lines centered at geffâ
4.3 and geffâ
2.0, their relative intensity depending on the manganese content of the sample. For x⩽3 mol%, the line from geffâ
4.3 has a resolved hyperfine structure characteristic for isolated Mn2+ ions disposed in distorted sites of an octahedral symmetry. The resonance line centered at geffâ
2.0 has not hyperfine structure and is attributed to coupled Mn2+ ions by dipolar (x⩽5 mol%) or/and superexchange interactions (x>5 mol%).The FT-IR data indicate the presence in the glasses of the BO3, BO4, BiO6 and BiO3 units and its dependence on the MnO content.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Sciences - Volume 7, Issue 11, November 2005, Pages 1438-1442
Journal: Solid State Sciences - Volume 7, Issue 11, November 2005, Pages 1438-1442
نویسندگان
I. Ardelean, Simona Cora, Raluca Ciceo Lucacel, Octavia Hulpus,