EPR studies of the oxyfluoride glass ceramics using Mn2+ as a paramagnetic probe

EPR studies of the oxyfluoride glass ceramics using Mn2+ as a paramagnetic probe

In this work, we used Mn2+ as a dopant in the oxyfluoride glasses with various fluoride compounds. Electron paramagnetic resonance (EPR) measurements were carried out before and after a heat treatment of the material. In both cases, a well pronounced hyperfine (hf) structure of the EPR spectra chara...

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Veröffentlicht in:IOP conference series. Materials Science and Engineering 2010-11, Vol.15 (1), p.012068
Hauptverfasser: Fedotovs, A, Berzins, Dz, Sarakovskis, A, Rogulis, U, Doke, G
Format: Artikel
Sprache:eng
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Electron paramagnetic resonance
Fluorides
Fluorine
Glass ceramics
Heat treatment
Lanthanum fluorides
Manganese ions
Oxyfluorides
Superhigh frequencies
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creator Fedotovs, A
Berzins, Dz
Sarakovskis, A
Rogulis, U
Doke, G
description In this work, we used Mn2+ as a dopant in the oxyfluoride glasses with various fluoride compounds. Electron paramagnetic resonance (EPR) measurements were carried out before and after a heat treatment of the material. In both cases, a well pronounced hyperfine (hf) structure of the EPR spectra characteristic to the Mn2+ ion have been observed. EPR measurements have also been studied for the separate fluoride counterparts of the oxyfluoride glasses. EPR spectra of the LaF3:Mn2+ and CaF2:Mn2+ powders show that Mn2+ ion has a strong superhyperfine (shf) interaction with surrounding fluorine nuclei, and this shf structure could be observed also in the heat treated glass samples.
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In both cases, a well pronounced hyperfine (hf) structure of the EPR spectra characteristic to the Mn2+ ion have been observed. EPR measurements have also been studied for the separate fluoride counterparts of the oxyfluoride glasses. EPR spectra of the LaF3:Mn2+ and CaF2:Mn2+ powders show that Mn2+ ion has a strong superhyperfine (shf) interaction with surrounding fluorine nuclei, and this shf structure could be observed also in the heat treated glass samples.</abstract><cop>Bristol</cop><pub>IOP Publishing</pub><doi>10.1088/1757-899X/15/1/012068</doi><oa>free_for_read</oa></addata></record>
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subjects Electron paramagnetic resonance
Fluorides
Fluorine
Glass ceramics
Heat treatment
Lanthanum fluorides
Manganese ions
Oxyfluorides
Superhigh frequencies
title EPR studies of the oxyfluoride glass ceramics using Mn2+ as a paramagnetic probe
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