The Czochralski growth of large-diameter La3Ga5.5Ta0.5O14 crystals along different orientations
La3Ga5SiO14, La3Ga5.5Ta0.5O14 and La3Ga5.5Nb0.5O14 crystals exhibit outstanding piezoelectric properties. They are of considerable interest for high-precision resonators. Although the synthesis of these crystals has been actively pursued over the past years, there are still some setbacks slowing dow...
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| Veröffentlicht in: | Journal of crystal growth 2006-01, Vol.287 (2), p.300-304 |
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| creator | LUO, J SHAH, D KLEMENZ, C. F DUDLEY, M CHEN, H |
| description | La3Ga5SiO14, La3Ga5.5Ta0.5O14 and La3Ga5.5Nb0.5O14 crystals exhibit outstanding piezoelectric properties. They are of considerable interest for high-precision resonators. Although the synthesis of these crystals has been actively pursued over the past years, there are still some setbacks slowing down industrial applications. We report on the growth of La3Ga5.5Ta0.5O14 (LGT) crystals by the Czochralski growth along left angle bracket0 0 1right-pointing angle bracket, left angle bracket1 0 0right-pointing angle bracket and left angle bracket1 2 0right-pointing angle bracket. These crystals were characterized by different techniques, including X-ray synchrotron topography. LGT crystals show a facet structure which determines the overall 3D distribution of other defects and strain. The relationship between faceting and crystal imperfections such as striations, dislocations, and inclusions will be discussed. After optimization of growth conditions, inclusions-free, colorless transparent single crystals with a diameter of 2' were obtained. These crystals were processed into Y-cut plano-convex resonators, and the Qf product measured from fundamental to ninth overtone. Values exceeding the limit of AT- and SC-cut quartz were obtained. |
| doi_str_mv | 10.1016/j.jcrysgro.2005.11.030 |
| format | Article |
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F ; DUDLEY, M ; CHEN, H</creator><creatorcontrib>LUO, J ; SHAH, D ; KLEMENZ, C. F ; DUDLEY, M ; CHEN, H ; Brookhaven National Laboratory (BNL) National Synchrotron Light Source</creatorcontrib><description>La3Ga5SiO14, La3Ga5.5Ta0.5O14 and La3Ga5.5Nb0.5O14 crystals exhibit outstanding piezoelectric properties. They are of considerable interest for high-precision resonators. Although the synthesis of these crystals has been actively pursued over the past years, there are still some setbacks slowing down industrial applications. We report on the growth of La3Ga5.5Ta0.5O14 (LGT) crystals by the Czochralski growth along left angle bracket0 0 1right-pointing angle bracket, left angle bracket1 0 0right-pointing angle bracket and left angle bracket1 2 0right-pointing angle bracket. These crystals were characterized by different techniques, including X-ray synchrotron topography. LGT crystals show a facet structure which determines the overall 3D distribution of other defects and strain. The relationship between faceting and crystal imperfections such as striations, dislocations, and inclusions will be discussed. After optimization of growth conditions, inclusions-free, colorless transparent single crystals with a diameter of 2' were obtained. These crystals were processed into Y-cut plano-convex resonators, and the Qf product measured from fundamental to ninth overtone. 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F</creatorcontrib><creatorcontrib>DUDLEY, M</creatorcontrib><creatorcontrib>CHEN, H</creatorcontrib><creatorcontrib>Brookhaven National Laboratory (BNL) National Synchrotron Light Source</creatorcontrib><title>The Czochralski growth of large-diameter La3Ga5.5Ta0.5O14 crystals along different orientations</title><title>Journal of crystal growth</title><description>La3Ga5SiO14, La3Ga5.5Ta0.5O14 and La3Ga5.5Nb0.5O14 crystals exhibit outstanding piezoelectric properties. They are of considerable interest for high-precision resonators. Although the synthesis of these crystals has been actively pursued over the past years, there are still some setbacks slowing down industrial applications. We report on the growth of La3Ga5.5Ta0.5O14 (LGT) crystals by the Czochralski growth along left angle bracket0 0 1right-pointing angle bracket, left angle bracket1 0 0right-pointing angle bracket and left angle bracket1 2 0right-pointing angle bracket. These crystals were characterized by different techniques, including X-ray synchrotron topography. LGT crystals show a facet structure which determines the overall 3D distribution of other defects and strain. The relationship between faceting and crystal imperfections such as striations, dislocations, and inclusions will be discussed. After optimization of growth conditions, inclusions-free, colorless transparent single crystals with a diameter of 2' were obtained. These crystals were processed into Y-cut plano-convex resonators, and the Qf product measured from fundamental to ninth overtone. 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F ; DUDLEY, M ; CHEN, H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c307t-82c83b439a309ca891c6902f3096e30d361fdb63e05d4d1f00ce29395edae5123</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>CRYSTAL GROWTH</topic><topic>CZOCHRALSKI METHOD</topic><topic>DEFECTS</topic><topic>DISLOCATIONS</topic><topic>DISTRIBUTION</topic><topic>Exact sciences and technology</topic><topic>GALLIUM OXIDES</topic><topic>Growth from melts; zone melting and refining</topic><topic>LANTHANUM OXIDES</topic><topic>MATERIALS SCIENCE</topic><topic>Methods of crystal growth; physics of crystal growth</topic><topic>MONOCRYSTALS</topic><topic>national synchrotron light source</topic><topic>NIOBIUM OXIDES</topic><topic>OPTIMIZATION</topic><topic>PARTICLE ACCELERATORS</topic><topic>Physics</topic><topic>PIEZOELECTRICITY</topic><topic>QUARTZ</topic><topic>RESONATORS</topic><topic>SILICON OXIDES</topic><topic>SLOWING-DOWN</topic><topic>STRIATIONS</topic><topic>SYNCHROTRONS</topic><topic>SYNTHESIS</topic><topic>TANTALUM OXIDES</topic><topic>TOPOGRAPHY</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>LUO, J</creatorcontrib><creatorcontrib>SHAH, D</creatorcontrib><creatorcontrib>KLEMENZ, C. F</creatorcontrib><creatorcontrib>DUDLEY, M</creatorcontrib><creatorcontrib>CHEN, H</creatorcontrib><creatorcontrib>Brookhaven National Laboratory (BNL) National Synchrotron Light Source</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Journal of crystal growth</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>LUO, J</au><au>SHAH, D</au><au>KLEMENZ, C. F</au><au>DUDLEY, M</au><au>CHEN, H</au><aucorp>Brookhaven National Laboratory (BNL) National Synchrotron Light Source</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Czochralski growth of large-diameter La3Ga5.5Ta0.5O14 crystals along different orientations</atitle><jtitle>Journal of crystal growth</jtitle><date>2006-01-01</date><risdate>2006</risdate><volume>287</volume><issue>2</issue><spage>300</spage><epage>304</epage><pages>300-304</pages><issn>0022-0248</issn><eissn>1873-5002</eissn><coden>JCRGAE</coden><abstract>La3Ga5SiO14, La3Ga5.5Ta0.5O14 and La3Ga5.5Nb0.5O14 crystals exhibit outstanding piezoelectric properties. They are of considerable interest for high-precision resonators. Although the synthesis of these crystals has been actively pursued over the past years, there are still some setbacks slowing down industrial applications. We report on the growth of La3Ga5.5Ta0.5O14 (LGT) crystals by the Czochralski growth along left angle bracket0 0 1right-pointing angle bracket, left angle bracket1 0 0right-pointing angle bracket and left angle bracket1 2 0right-pointing angle bracket. These crystals were characterized by different techniques, including X-ray synchrotron topography. LGT crystals show a facet structure which determines the overall 3D distribution of other defects and strain. The relationship between faceting and crystal imperfections such as striations, dislocations, and inclusions will be discussed. After optimization of growth conditions, inclusions-free, colorless transparent single crystals with a diameter of 2' were obtained. These crystals were processed into Y-cut plano-convex resonators, and the Qf product measured from fundamental to ninth overtone. Values exceeding the limit of AT- and SC-cut quartz were obtained.</abstract><cop>Amsterdam</cop><pub>Elsevier</pub><doi>10.1016/j.jcrysgro.2005.11.030</doi><tpages>5</tpages></addata></record> |
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| subjects | Cross-disciplinary physics: materials science rheology CRYSTAL GROWTH CZOCHRALSKI METHOD DEFECTS DISLOCATIONS DISTRIBUTION Exact sciences and technology GALLIUM OXIDES Growth from melts zone melting and refining LANTHANUM OXIDES MATERIALS SCIENCE Methods of crystal growth physics of crystal growth MONOCRYSTALS national synchrotron light source NIOBIUM OXIDES OPTIMIZATION PARTICLE ACCELERATORS Physics PIEZOELECTRICITY QUARTZ RESONATORS SILICON OXIDES SLOWING-DOWN STRIATIONS SYNCHROTRONS SYNTHESIS TANTALUM OXIDES TOPOGRAPHY |
| title | The Czochralski growth of large-diameter La3Ga5.5Ta0.5O14 crystals along different orientations |
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