KNN KNN METHOD OF MANUFACTURING POTASSIUM SODIUM NIOBATE CERAMICS WITH SINGLE CRYSTAL AND POTASSIUM SODIUM NIOBATE CERAMICS WITH SINGLE CRYSTAL MANUFACTURED BY THE METHOD

摘要

(K, Na) NbO ₃ (hereinafter referred to as KNN) single crystal ceramic, and a KNN single crystal ceramic produced thereby. The method of producing a KNN single crystal ceramic according to the present invention is a method of producing a KNN single crystal by forming a metal vacancy while substituting M ²⁺ ions in a Na ⁺ ion site to form a single crystal (K _{0.5-x / 2} Na _{0.5 -x / 2-y □ y /} 2 M x + y / 2) Nb 1-x / 3 + y O 3 + z wt.% CuO and a composition design, K-containing compound, Na-containing compound, M-containing compound, Nb Containing compound is mixed with the raw material powder; Calcining the raw powder; Milling the calcined product; And sintering the milled resultant to grow a single crystal. The present invention relates to a KNMN single crystal and a ceramic manufacturing method. In the step of milling the calcined product, the Cu-containing compound may be further added to the calcined product and then milled, and a portion of K, Na, and Nb may be substituted with another element.