Diffusion of Pr3+ ions in silver halide crystals

L. Nagli; A. German; A. Katzir

doi:10.1016/S0925-3467(00)00084-7

Diffusion of Pr³⁺ ions in silver halide crystals

L. Nagli, A. German, A. Katzir

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The diffusion of Pr³⁺ ions in AgBr and AgCl_0.77Br_0.23 single crystals has been investigated by a method based on measuring the luminescence intensity distribution along the diffusion direction. The diffusion constants D₀ for these crystals were 3.8×10^-6 and 7.95 cm²/s; and the enthalpy of diffusion H values were 0.4 and 1.25 eV, respectively. A strong influence of the silver halide composition on Pr³⁺-ions diffusion parameters was observed. The low value of the diffusion enthalpy found for these ions is described in terms of an associated complex 3⁺-ion - cation vacancy motion by an exchange mechanism. The influence of the radius of the rare earth ions on the diffusion enthalpy is discussed.

Original language	English
Pages (from-to)	243-248
Number of pages	6
Journal	Optical Materials
Volume	16
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-3467(00)00084-7
State	Published - 2001
Externally published	Yes

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title = "Diffusion of Pr3+ ions in silver halide crystals",

abstract = "The diffusion of Pr3+ ions in AgBr and AgCl0.77Br0.23 single crystals has been investigated by a method based on measuring the luminescence intensity distribution along the diffusion direction. The diffusion constants D0 for these crystals were 3.8×10-6 and 7.95 cm2/s; and the enthalpy of diffusion H values were 0.4 and 1.25 eV, respectively. A strong influence of the silver halide composition on Pr3+-ions diffusion parameters was observed. The low value of the diffusion enthalpy found for these ions is described in terms of an associated complex 3+-ion - cation vacancy motion by an exchange mechanism. The influence of the radius of the rare earth ions on the diffusion enthalpy is discussed.",

author = "L. Nagli and A. German and A. Katzir",

year = "2001",

doi = "10.1016/S0925-3467(00)00084-7",

language = "אנגלית",

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pages = "243--248",

journal = "Optical Materials",

issn = "0925-3467",

publisher = "Elsevier B.V.",

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T1 - Diffusion of Pr3+ ions in silver halide crystals

AU - Nagli, L.

AU - German, A.

AU - Katzir, A.

PY - 2001

Y1 - 2001

N2 - The diffusion of Pr3+ ions in AgBr and AgCl0.77Br0.23 single crystals has been investigated by a method based on measuring the luminescence intensity distribution along the diffusion direction. The diffusion constants D0 for these crystals were 3.8×10-6 and 7.95 cm2/s; and the enthalpy of diffusion H values were 0.4 and 1.25 eV, respectively. A strong influence of the silver halide composition on Pr3+-ions diffusion parameters was observed. The low value of the diffusion enthalpy found for these ions is described in terms of an associated complex 3+-ion - cation vacancy motion by an exchange mechanism. The influence of the radius of the rare earth ions on the diffusion enthalpy is discussed.

AB - The diffusion of Pr3+ ions in AgBr and AgCl0.77Br0.23 single crystals has been investigated by a method based on measuring the luminescence intensity distribution along the diffusion direction. The diffusion constants D0 for these crystals were 3.8×10-6 and 7.95 cm2/s; and the enthalpy of diffusion H values were 0.4 and 1.25 eV, respectively. A strong influence of the silver halide composition on Pr3+-ions diffusion parameters was observed. The low value of the diffusion enthalpy found for these ions is described in terms of an associated complex 3+-ion - cation vacancy motion by an exchange mechanism. The influence of the radius of the rare earth ions on the diffusion enthalpy is discussed.

UR - https://www.scopus.com/pages/publications/0034818604

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SN - 0925-3467

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SP - 243

EP - 248

JO - Optical Materials

JF - Optical Materials

IS - 1-2

ER -

Diffusion of Pr³⁺ ions in silver halide crystals

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