Floating Zone Growth and Characterization of (Ca_1-x Nd _x )₁₂Al₁₄O_33+6x (x ∼ 0.001) Single Crystals.

ABSTRACT: Rare earth Nd³⁺ ion-doped Ca₁₂Al₁₄O₃₃ single crystals were grown at a rate of 1 mm/h by the floating zone technique in an oxygen atmosphere. The Nd concentration in the central area of the as-grown crystals was higher than that in the peripheral area due to the highly concave growth interface shape. The average Nd concentration in the as-prepared parallelepiped slices of ∼6 × 3 × 2 mm³ for electride fabrication was ∼0.093 ± 0.011 atom % Nd in contrast to the nominal 0.1 atom % Nd concentration. The Nd-doped C12A7:Nd single crystalline electride prepared by thermal treatment with a Ti metal at 1100 °C for 48 h induced an insulator-metal transition with the highest conductivity of approximately 1165 S/cm. These annealing conditions provi

SUBMITTER: Ali MM 

PROVIDER: S-EPMC6640739 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature