Improvements in or relating to crystals and to electromagnetic and electro-acoustic devices incorporating such crystals

A crystal of KTax Nb1-x O3, where x lies between 0.2 and 0.8 is produced by said crystal growth from a melt at 1250 DEG C in an oxygen containing atmosphere. Initial ingredients may be in the form of oxides or carbmates, and small quantities of Sn, Si, Ge and Ti may be added as dopants. Care is take...

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Bibliographische Detailangaben
Hauptverfasser:	DENTON RICHARD TODD, UITERT LEGRAND GERARD VAN, GEUSIC JOSEPH EDWARD
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE AMPLIFIERS APPARATUS THEREFOR ARTIFICIAL STONE BASIC ELECTRONIC CIRCUITRY CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CRYSTAL GROWTH DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRICITY FREQUENCY-CHANGING GENERATION OF NOISE BY SUCH CIRCUITS GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER LIME, MAGNESIA METALLURGY NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL REFRACTORIES SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH SLAG TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TREATMENT OF NATURAL STONE UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	A crystal of KTax Nb1-x O3, where x lies between 0.2 and 0.8 is produced by said crystal growth from a melt at 1250 DEG C in an oxygen containing atmosphere. Initial ingredients may be in the form of oxides or carbmates, and small quantities of Sn, Si, Ge and Ti may be added as dopants. Care is taken to minimise the presence of Ca, Cl, F, Sr, Ba, Na and Li.