Ya Zhydachevskii et al 2006 J. Phys.: Condens. Matter 18 11385 doi:10.1088/0953-8984/18/49/028
Photoluminescence studies of Mn4+ ions in YAlO3 crystals at ambient and high pressure
Ya Zhydachevskii1, D Galanciak2, S Kobyakov3, M Berkowski3, A Kamińska3, A Suchocki3, Ya Zakharko4 and A Durygin5
Show affiliationsDetailed investigations of the photoluminescence properties of Mn4+ (3d3) ions in YAlO3 have been performed in the temperature range 10–600 K. The luminescence of Mn4+ ions due to the 
transition consists of two zero-phonon lines (R lines) at 691.3 and 692.7 nm, which became visible only at low temperature, and their vibronic sidebands that cover the range of 660–740 nm. The thermal quenching of the luminescence intensity due to the non-radiative decay occurs at temperatures above 420 K. The temperature dependence of the luminescence decay time shows a quasi-linear decrease from τ = 4.9 to 1.6 ms in the temperature range from 90 to 420 K (with a temperature coefficient −0.01 ms K−1) that makes YAlO3:Mn a potentially good phosphor for a fibre optic fluorescence thermometer in this temperature range. The high-pressure low-temperature luminescence measurements in a diamond-anvil cell reveal similar pressure coefficients for Mn4+ and Cr3+ dopant ions in YAlO3, equal to 1.16 cm−1 kbar−1 and 1.08 cm−1 kbar−1, respectively.
- PACS
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78.55.Hx Other solid inorganic materials
62.50.-p High-pressure effects in solids and liquids
- Subjects
- Dates
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Issue 49 (13 December 2006)
Received 20 September 2006, in final form 18 October 2006
Published 23 November 2006
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Photoluminescence studies of Mn4+ ions in YAlO3 crystals at ambient and high pressure
Ya Zhydachevskii et al 2006 J. Phys.: Condens. Matter 18 11385
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