| (40-x)BaO⋅xFe2O3⋅60P2O5 유리의 Fe3+이온에 관한 전자스핀공명 연구 |
| 강은태 |
| 경상대학교 나노.신소재공학부 |
| Electron Spin Resonance Study of Fe3+ in (40-x)BaO⋅xFe2O3⋅60P2O5 Glasses |
| Eun-Tae Kang |
| School of Materials Science and Engineering, Gyeongsang National University |
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| ABSTRACT |
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(40-x)BaO${cdot}xFe_2O_3{cdot}60P_2O_5$ glasses with $5{leq}x{leq}35mol%$ were investigated by ESR spectroscopy. Two resonances observed near g=2.0 and g=4.3. The line at g=4.3 disappeared with the increase of the $Fe_2O_3$ content. The resonance at $g{approx}2.0$ displayed characteristic signal consisting of superposed extremely broad and narrow components. The broader one indicates the presence of the association of two or more $Fe^{3+}$ ions, antiferromagnetically and the narrow one is related to the microclusters involving iron ions. Temperature dependence of the ESR integrated intensity revealed short-range antiferromagnetic character for $x{geq}15mol%$. |
| Key words:
ESR, EPR, BaO-$Fe_2O_3-P_2O_5$ glass$Fe^{3+}$ ion, Antiferromagntic interaction |
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