Detection of phase transitions in RbTiOPO4 and KTiOPO4 by luminescence
- 1. Crystal Growth Centre, Anna University, Chennai 600 025 (India)
- 2. Physics, Science and Art Faculty, Cukurova University, Balcali Adana tr-01330 (Turkey)
- 3. Department of Science and Technology, University of Sussex, Pevensey Building, Brighton BN1 9QH (United Kingdom)
Description
Luminescence signals have been recorded at low temperature during thermal cycling of crystals of RbTiOPO4 (RTP) and KTiOPO4 (KTP) excited by x-rays. In both crystals there are well resolved intense intensity spikes and changes in emission spectra consistent with first-order phase transitions. The transitions are not reversible, except by high temperature annealing. The observations imply that new phases of RTP and KTP can be formed, and in some cases these may relate to nanoparticle-size inclusions. Crystal quality assessment from the luminescence behaviour may have value for non-linear optics. Cathodoluminescence of the RTP surface reveals different emission spectra from the bulk material with consequent implications for usage in surface waveguide devices
Availability note (English)
Available online at http://stacks.iop.org/0953-8984/15/7599/cm3_44_013.pdf or at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-648X) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-8984/15/7599/cm3_44_013.pdf; http://www.iop.org/;
- DOI
- 10.1088/0953-8984/15/44/013;
- PII
- S0953-8984(03)63574-5;
Publishing Information
- Journal Title
- Journal of Physics. Condensed Matter
- Journal Volume
- 15
- Journal Issue
- 44
- Journal Page Range
- p. 7599-7609
- ISSN
- 0953-8984
- CODEN
- JCOMEL
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35018441
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
- Descriptors DEI
- CATHODOLUMINESCENCE; EMISSION SPECTRA; MONOCRYSTALS; PHASE TRANSFORMATIONS; PHOTOLUMINESCENCE; POTASSIUM COMPOUNDS; RADIOLUMINESCENCE; RUBIDIUM COMPOUNDS; TITANIUM OXIDES; TITANIUM PHOSPHATES; X RADIATION
- Descriptors DEC
- ALKALI METAL COMPOUNDS; CHALCOGENIDES; CRYSTALS; ELECTROMAGNETIC RADIATION; EMISSION; IONIZING RADIATIONS; LUMINESCENCE; OXIDES; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; PHOTON EMISSION; RADIATIONS; SPECTRA; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS