Crystal structure and electron microprobe analyses of a lanthanum lutetium gallium garnet

doi:10.1063/1.351604

Crystal structure and electron microprobe analyses of a lanthanum lutetium gallium garnet

Single-crystal electron microprobe analysis of a lanthanum lutetium gallium garnet has resulted in a composition of La_2.37Nd_0.07Pb_0.01Lu_2.54Cr_0.01 Ga_3.00O₁₂. This composition gives better agreement between observed and calculated total dielectric polarizabilities than previously reported compositions (La_2.26-2.32Nd_0.04Lu_2.57-2.63Ga_3.07O₁₂ by x-ray fluorescence and La_2.655Nd_0.027Lu_2.656Ga_2.655O₁₂ by inductively coupled plasma analyses), and does not imply the crystal-chemically improbable presence of Lu³⁺ in the tetrahedral site. X-ray and neutron crystal-structure analyses have confirmed that little or no Lu resides in this site.

Publication:

Journal of Applied Physics

Pub Date:

September 1992

DOI:

10.1063/1.351604

Bibcode:

1992JAP....72.2152P

Keywords:

Crystal Structure;
Electron Microscopy;
Gallium Compounds;
Garnets;
Lanthanum Compounds;
Lutetium Compounds;
Crystal Growth;
Neutron Diffraction;
Single Crystals;
X Ray Diffraction;
Solid-State Physics

ADS

Crystal structure and electron microprobe analyses of a lanthanum lutetium gallium garnet

Abstract