Potassium sodium niobate ceramics with single crystal
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United States of America Patent
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Dec 25, 2018
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Dec 14, 2017
app pub date -
Sep 9, 2016
filing date -
Jun 10, 2016
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Abstract
Disclosed is a (K,Na)NbO3 (abbreviated by “KNN”)-based single crystal ceramic. The KNN-based single crystal ceramic according to the present disclosure is formulated by (K0.5−x/2Na0.5−x/2−y□y/2Mx+y/2)Nb1−x/3+yO3, wherein M indicates a metal having a different valence from Na, and □ indicates a metal vacancy. The above formulated KNN-based single crystal ceramic allows compensating for the volatilization of Na in a growing grain due to the addition of M2+ ions, and substituting M2+ ions for Na+ ions to form metal vacancies, thereby making possible the single crystal growth.
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