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Effect of Tb3+ ions on X-ray-induced defect formation in phosphate containing glasses

Effect of Tb3+ ions on X-ray-induced defect formation in phosphate containing glasses
Effect of Tb3+ ions on X-ray-induced defect formation in phosphate containing glasses
The study of radiation-induced defect formation in glasses is of growing interest for applications in optics and photonics. The influence of Tb3+ ions on X-ray-induced defects has been examined in glasses with different phosphate contents. The defects have been characterized by optical absorption and ESR spectroscopy. (Tb3+)+ ions are formed by X-ray irradiation. They exhibit a broad charge transfer band at 370 nm. The formation of (Tb3+)+ hole centres suppresses the formation of intrinsic phosphate-related hole centres, absorbing in the visible region. PO3 defects absorbing in the ultraviolet region contribute mainly to the electron centres corresponding to the (Tb3+)+ hole centres. Immediately after X-ray irradiation, 5–10% of the Tb3+ ions have been oxidized. The amount of (Tb3+)+ ions increases with increasing phosphate content. The stability of the (Tb3+)+ ions at room temperature depends on glass composition and melting conditions.
Terbium ions, Phosphate glasses, Irradiation, Defects, Optical absorption, Electron spin resonance
419-430
Ebendorff-Heidepriem, H.
e3e2475c-2377-47ff-a544-f723c2e61aca
Ehrt, D.
9daad7e6-661d-4a1b-8dbb-7a36c8175ce3
Ebendorff-Heidepriem, H.
e3e2475c-2377-47ff-a544-f723c2e61aca
Ehrt, D.
9daad7e6-661d-4a1b-8dbb-7a36c8175ce3

Ebendorff-Heidepriem, H. and Ehrt, D. (2002) Effect of Tb3+ ions on X-ray-induced defect formation in phosphate containing glasses. Optical Materials, 18 (4), 419-430. (doi:10.1016/S0925-3467(01)00182-3).

Record type: Article

Abstract

The study of radiation-induced defect formation in glasses is of growing interest for applications in optics and photonics. The influence of Tb3+ ions on X-ray-induced defects has been examined in glasses with different phosphate contents. The defects have been characterized by optical absorption and ESR spectroscopy. (Tb3+)+ ions are formed by X-ray irradiation. They exhibit a broad charge transfer band at 370 nm. The formation of (Tb3+)+ hole centres suppresses the formation of intrinsic phosphate-related hole centres, absorbing in the visible region. PO3 defects absorbing in the ultraviolet region contribute mainly to the electron centres corresponding to the (Tb3+)+ hole centres. Immediately after X-ray irradiation, 5–10% of the Tb3+ ions have been oxidized. The amount of (Tb3+)+ ions increases with increasing phosphate content. The stability of the (Tb3+)+ ions at room temperature depends on glass composition and melting conditions.

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More information

Published date: 2002
Keywords: Terbium ions, Phosphate glasses, Irradiation, Defects, Optical absorption, Electron spin resonance

Identifiers

Local EPrints ID: 13785
URI: http://eprints.soton.ac.uk/id/eprint/13785
PURE UUID: 6daa3575-d312-4dad-837f-90b6a76fed89

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Date deposited: 05 Jan 2005
Last modified: 19 Oct 2021 17:41

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