EPR study of the Mn-doped magnesium titanate ceramics

Kód výsledku v IS VaVaI

RIV/68378271:_____/22:00567786 - isvavai.cz

Výsledek na webu

https://doi.org/10.1149/2162-8777/ac4a80

DOI - Digital Object Identifier

10.1149/2162-8777/ac4a80

Jazyk výsledku

angličtina

Název v původním jazyce

EPR study of the Mn-doped magnesium titanate ceramics

Popis výsledku v původním jazyce

Manganese-doped magnesium titanate ceramic samples obtained by a solid-state reaction via sintering in the air from a mixture of MgO and TiO2 powders of different molar ratios were analyzed by electron paramagnetic resonance (EPR) technique. The EPR signals of Mn2+ ions (S = 5/2, CYRILLIC CAPITAL LETTER BYELORUSSIAN-UKRAINIAN I = 5/2) in crystal phases of MgO, Mg2TiO4, and MgTiO3 were detected. We have obtained the following spin Hamiltonian parameters for Mn2+ ions: g = 2.0015, A similar to 81.0 x 10(-4) cm(-1) (in MgO phase),g = 2.0029, A similar to 73.8 x 10(-4) cm(-1) , b (2) (0) = 35 x 10(-4) cm(-1) (in Mg2TiO4 phase), g = 2.0040, A similar to 79.0 x 10(-4) cm(-1) , b (2) (0) = 165 x 10(-4) cm(-1) (in MgTiO3 phase). Despite the presence of Mn4+ centers in both Mg2TiO4:Mn and MgTiO3:Mn ceramics confirmed by previous optical studies, no EPR signals related to Mn4+ ions (S = 3/2, CYRILLIC CAPITAL LETTER BYELORUSSIAN-UKRAINIAN I = 5/2) were found. The Mn2+ EPR signals are proposed as structural probes in manganese-doped magnesium titanate ceramics.

Název v anglickém jazyce

EPR study of the Mn-doped magnesium titanate ceramics

Popis výsledku anglicky

Manganese-doped magnesium titanate ceramic samples obtained by a solid-state reaction via sintering in the air from a mixture of MgO and TiO2 powders of different molar ratios were analyzed by electron paramagnetic resonance (EPR) technique. The EPR signals of Mn2+ ions (S = 5/2, CYRILLIC CAPITAL LETTER BYELORUSSIAN-UKRAINIAN I = 5/2) in crystal phases of MgO, Mg2TiO4, and MgTiO3 were detected. We have obtained the following spin Hamiltonian parameters for Mn2+ ions: g = 2.0015, A similar to 81.0 x 10(-4) cm(-1) (in MgO phase),g = 2.0029, A similar to 73.8 x 10(-4) cm(-1) , b (2) (0) = 35 x 10(-4) cm(-1) (in Mg2TiO4 phase), g = 2.0040, A similar to 79.0 x 10(-4) cm(-1) , b (2) (0) = 165 x 10(-4) cm(-1) (in MgTiO3 phase). Despite the presence of Mn4+ centers in both Mg2TiO4:Mn and MgTiO3:Mn ceramics confirmed by previous optical studies, no EPR signals related to Mn4+ ions (S = 3/2, CYRILLIC CAPITAL LETTER BYELORUSSIAN-UKRAINIAN I = 5/2) were found. The Mn2+ EPR signals are proposed as structural probes in manganese-doped magnesium titanate ceramics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

EF16_019/0000760: Fyzika pevných látek pro 21. století

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ECS Journal of Solid State Science and Technology

ISSN

2162-8769

e-ISSN

2162-8777

Svazek periodika

11

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

013005

Kód UT WoS článku

000745303800001

EID výsledku v databázi Scopus

2-s2.0-85125526404