Structural and optical characterization of pulsed laser-ablated potassium lithium niobate thin films
Thin films of potassium lithium niobate (K3Li2Nb5O15: KLN) have been prepared on glass substrate, as a function of substrate temperature, using a pulsed laser‐deposition (PLD) technique for the first time. Grazing‐incidence X‐ray diffraction (GIXRD) analysis suggests that KLN films can be grown succ...
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| Veröffentlicht in: | Physica status solidi. A, Applications and materials science Applications and materials science, 2009-12, Vol.206 (12), p.2801-2808 |
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| container_title | Physica status solidi. A, Applications and materials science |
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| creator | Jayasree, V. Ratheesh, R. Rao, P. Prabhakar Koshy, Peter Ganesan, V. Nayar, V. U. Pillai, V. P. Mahadevan |
| description | Thin films of potassium lithium niobate (K3Li2Nb5O15: KLN) have been prepared on glass substrate, as a function of substrate temperature, using a pulsed laser‐deposition (PLD) technique for the first time. Grazing‐incidence X‐ray diffraction (GIXRD) analysis suggests that KLN films can be grown successfully at a substrate temperature as low as 300 K. The anomalous behavior of the decline of crystalline structure with increase in substrate temperature is explained. The atomic force microscopic (AFM) and scanning electron microscopic (SEM) images show an agglomerated growth mode for the films deposited at a substrate temperature of 300 K and a decrease in grain size with increase in substrate temperature. The films deposited at higher substrate temperatures show ring‐like structures. The AFM analysis shows that the rms surface roughness of the film decrease with increase in substrate temperature. The UV–Vis transmission spectra suggest that the nature of the transition in the films is directly allowed. A blue shift in optical bandgap is observed for the films compared to bulk material. The changes in the optical bandgap with substrate temperature are also discussed. |
| doi_str_mv | 10.1002/pssa.200824220 |
| format | Article |
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Prabhakar ; Koshy, Peter ; Ganesan, V. ; Nayar, V. U. ; Pillai, V. P. Mahadevan</creator><creatorcontrib>Jayasree, V. ; Ratheesh, R. ; Rao, P. Prabhakar ; Koshy, Peter ; Ganesan, V. ; Nayar, V. U. ; Pillai, V. P. Mahadevan</creatorcontrib><description>Thin films of potassium lithium niobate (K3Li2Nb5O15: KLN) have been prepared on glass substrate, as a function of substrate temperature, using a pulsed laser‐deposition (PLD) technique for the first time. Grazing‐incidence X‐ray diffraction (GIXRD) analysis suggests that KLN films can be grown successfully at a substrate temperature as low as 300 K. The anomalous behavior of the decline of crystalline structure with increase in substrate temperature is explained. The atomic force microscopic (AFM) and scanning electron microscopic (SEM) images show an agglomerated growth mode for the films deposited at a substrate temperature of 300 K and a decrease in grain size with increase in substrate temperature. The films deposited at higher substrate temperatures show ring‐like structures. The AFM analysis shows that the rms surface roughness of the film decrease with increase in substrate temperature. The UV–Vis transmission spectra suggest that the nature of the transition in the films is directly allowed. A blue shift in optical bandgap is observed for the films compared to bulk material. The changes in the optical bandgap with substrate temperature are also discussed.</description><identifier>ISSN: 1862-6300</identifier><identifier>EISSN: 1862-6319</identifier><identifier>DOI: 10.1002/pssa.200824220</identifier><language>eng</language><publisher>Berlin: WILEY-VCH Verlag</publisher><subject>42.70.Mp ; 61.05.cp ; 68.37.Hk ; 68.37.Ps ; 68.55.-a ; 81.15.Fg ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Condensed matter: structure, mechanical and thermal properties ; Cross-disciplinary physics: materials science; rheology ; Exact sciences and technology ; Insulators ; Laser deposition ; Materials science ; Methods of deposition of films and coatings; film growth and epitaxy ; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation ; Optical properties of specific thin films ; Physics ; Structure and morphology; thickness ; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties) ; Thin film structure and morphology</subject><ispartof>Physica status solidi. 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The atomic force microscopic (AFM) and scanning electron microscopic (SEM) images show an agglomerated growth mode for the films deposited at a substrate temperature of 300 K and a decrease in grain size with increase in substrate temperature. The films deposited at higher substrate temperatures show ring‐like structures. The AFM analysis shows that the rms surface roughness of the film decrease with increase in substrate temperature. The UV–Vis transmission spectra suggest that the nature of the transition in the films is directly allowed. A blue shift in optical bandgap is observed for the films compared to bulk material. 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Mahadevan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3570-2c29bacdca65d12816585633801580cd724c3a87994d15806b6d6beb973ba5ee3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>42.70.Mp</topic><topic>61.05.cp</topic><topic>68.37.Hk</topic><topic>68.37.Ps</topic><topic>68.55.-a</topic><topic>81.15.Fg</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Exact sciences and technology</topic><topic>Insulators</topic><topic>Laser deposition</topic><topic>Materials science</topic><topic>Methods of deposition of films and coatings; film growth and epitaxy</topic><topic>Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation</topic><topic>Optical properties of specific thin films</topic><topic>Physics</topic><topic>Structure and morphology; thickness</topic><topic>Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)</topic><topic>Thin film structure and morphology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jayasree, V.</creatorcontrib><creatorcontrib>Ratheesh, R.</creatorcontrib><creatorcontrib>Rao, P. 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(a)</addtitle><date>2009-12</date><risdate>2009</risdate><volume>206</volume><issue>12</issue><spage>2801</spage><epage>2808</epage><pages>2801-2808</pages><issn>1862-6300</issn><eissn>1862-6319</eissn><abstract>Thin films of potassium lithium niobate (K3Li2Nb5O15: KLN) have been prepared on glass substrate, as a function of substrate temperature, using a pulsed laser‐deposition (PLD) technique for the first time. Grazing‐incidence X‐ray diffraction (GIXRD) analysis suggests that KLN films can be grown successfully at a substrate temperature as low as 300 K. The anomalous behavior of the decline of crystalline structure with increase in substrate temperature is explained. The atomic force microscopic (AFM) and scanning electron microscopic (SEM) images show an agglomerated growth mode for the films deposited at a substrate temperature of 300 K and a decrease in grain size with increase in substrate temperature. The films deposited at higher substrate temperatures show ring‐like structures. The AFM analysis shows that the rms surface roughness of the film decrease with increase in substrate temperature. The UV–Vis transmission spectra suggest that the nature of the transition in the films is directly allowed. A blue shift in optical bandgap is observed for the films compared to bulk material. The changes in the optical bandgap with substrate temperature are also discussed.</abstract><cop>Berlin</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/pssa.200824220</doi><tpages>8</tpages></addata></record> |
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| subjects | 42.70.Mp 61.05.cp 68.37.Hk 68.37.Ps 68.55.-a 81.15.Fg Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Exact sciences and technology Insulators Laser deposition Materials science Methods of deposition of films and coatings film growth and epitaxy Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of specific thin films Physics Structure and morphology thickness Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) Thin film structure and morphology |
| title | Structural and optical characterization of pulsed laser-ablated potassium lithium niobate thin films |
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