Development And Modification Of Photorefractive Properties In The Tungsten Bronze Family Crystals

Neurgaonkar, Ratnakar R.; Cory, W. K.; Oliver, J. R.; Ewbank, M. D.; Hall, William J.

doi:10.1117/12.7974088

Cited by 156 publications

(39 citation statements)

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“…In view of these excellent single-crystal properties, there is an interest in investigating SBN thin films for applications in electromechanical and optical microsystem. 3 In this work, epitaxial growth of SBN x thin films is investigated. Currently, there is no commonly available TB crystalline substrate.…”

Section: Introductionmentioning

confidence: 99%

Transmission-electron-microscopy study of quasi-epitaxial tungsten-bronze (Sr_2.5Ba_2.5Nb₁₀O₃₀) thin film on perovskite (SrTiO₃) single crystal

Infortuna

Muralt

et al. 2007

J. Mater. Res.

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Strontium barium niobate (Sr 2.5 Ba 2.5 Nb 10 O 30 ) thin films were deposited on (001) SrTiO 3 single-crystalline substrates by pulsed laser deposition. The growth nature was investigated by transmission electron microscopy (TEM). Selected-area electron diffraction and high-resolution transmission electron microscopy revealed the existence of six types of grains. These grains grew on the substrate in a partially epitaxial fashion. Geometrical models were built, which were confirmed by TEM observations. Based on the TEM results and geometrical analysis, a crystallographic model was developed. The strain nature resulting from the growth columns is discussed in this report.

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Section: Introductionmentioning

confidence: 99%

Transmission-electron-microscopy study of quasi-epitaxial tungsten-bronze (Sr_2.5Ba_2.5Nb₁₀O₃₀) thin film on perovskite (SrTiO₃) single crystal

Infortuna

Muralt

et al. 2007

J. Mater. Res.

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“…The ferroelectric phase transitions of the SBN family have been discussed within the random-field Ising model [3,4]. SBN shows excellent dielectric [5,6], piezoelectric [7], pyroelectric [8], and photorefractive properties [9][10][11][12].…”

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confidence: 99%

Critical slowing down and elastic anomaly of uniaxial ferroelectricCa0.28Ba0.72Nb2O6crystals with tungsten bronze structure

et al. 2014

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The ferroelectric phase transition of uniaxial Ca 0.28 Ba 0.72 Nb 2 O 6 single crystals with a moderate effective charge disorder was investigated by Brillouin scattering to clarify the dynamic properties. In the tetragonal paraelectric phase a remarkable softening of the sound velocity of the longitudinal acoustic mode and a significant increase in the sound attenuation were observed close to the Curie temperature T C = 527 K. The intermediate temperature T * ∼ 640 K and the Burns temperature T B ∼ 790 K were determined from the temperature variation in the sound attenuation. The intense broad central peak (CP) caused by polarization and strain fluctuations due to polar nanoregions was clearly observed in the vicinity of T C . The relaxation time determined by the CP width clearly shows critical slowing down towards T C , reflecting a weakly first-order phase transition under weak random fields.

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“…Les propriétés photorefractives dépendent fortement de la valeur de x dans la formule Sr x Bai_ x Nb20(, que l'on abrège en SBN:x%. Les coefficients électro-optiques sont plus forts dans le SBN:75 que dans le SBN:60 [163]. Les cristaux sont plus faciles à faire croître pour x = 60%, et nous donnons toutes les valeurs des paramètres pour cette composition.…”

Section: Présentation Et Valeurs Des Paramètresunclassified

“…Le dopant le plus employé est le cérium [163][164][165]. Les échantillons sont sensibles dans tout le spectre visible de 450 à 750 nm.…”

Section: Présentation Et Valeurs Des Paramètresunclassified

L'effet photoréfractif

Pauliat

Roosen

1998

l'Optique Non Linéaire Et Ses Matériaux

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Résumé : La souplesse d'emploi des matériaux photoréfractifs est un de leurs principaux attraits. Un même échantillon est sensible sur une plage de longueurs d'onde de plus de 100 nm avec des temps de réponse s'étageant de moins d'une nanoseconde à plus d'une seconde en fonction de la puissance optique mise en jeu. Cette richesse explique le succès de l'effet photoréfractif et aussi les centaines de publications annuelles sur ce sujet. De nombreux matériaux photoréfractifs aux caractéristiques très diverses sont disponibles commercialement. Bien qu'il ne soit pas possible de résumer ici l'ensemble de ces résultats, nous présentons les notions indispensables à la compréhension de ce phénomène nonlinéaire, à l'utilisation de ces matériaux, et au choix des échantillons. Nous n'abordons pas le vaste domaine des applications.

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Development And Modification Of Photorefractive Properties In The Tungsten Bronze Family Crystals

Cited by 156 publications

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Transmission-electron-microscopy study of quasi-epitaxial tungsten-bronze (Sr_2.5Ba_2.5Nb₁₀O₃₀) thin film on perovskite (SrTiO₃) single crystal

Transmission-electron-microscopy study of quasi-epitaxial tungsten-bronze (Sr_2.5Ba_2.5Nb₁₀O₃₀) thin film on perovskite (SrTiO₃) single crystal

Critical slowing down and elastic anomaly of uniaxial ferroelectricCa0.28Ba0.72Nb2O6crystals with tungsten bronze structure

L'effet photoréfractif

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Development And Modification Of Photorefractive Properties In The Tungsten Bronze Family Crystals

Cited by 156 publications

References 0 publications

Transmission-electron-microscopy study of quasi-epitaxial tungsten-bronze (Sr2.5Ba2.5Nb10O30) thin film on perovskite (SrTiO3) single crystal

Transmission-electron-microscopy study of quasi-epitaxial tungsten-bronze (Sr2.5Ba2.5Nb10O30) thin film on perovskite (SrTiO3) single crystal

Critical slowing down and elastic anomaly of uniaxial ferroelectricCa0.28Ba0.72Nb2O6crystals with tungsten bronze structure

L'effet photoréfractif

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Product

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Transmission-electron-microscopy study of quasi-epitaxial tungsten-bronze (Sr_2.5Ba_2.5Nb₁₀O₃₀) thin film on perovskite (SrTiO₃) single crystal

Transmission-electron-microscopy study of quasi-epitaxial tungsten-bronze (Sr_2.5Ba_2.5Nb₁₀O₃₀) thin film on perovskite (SrTiO₃) single crystal