Structure and Ordering of Mixed Aluminates Y1−xErxAlO3 by NMR, Acoustic, and Heat Pulse Techniques

Abstract

Substitutional ordering of Y1‐xErxAlO3 (0 ≦ × ≦ 0.45) mixed crystals due to the mutual arrangement of ions Y and Er over lattice sites is studied by NMR, ultrasonic, and heat pulse techniques. It is shown that clustering of solid solution occurs in the concentration range x ≦ 0.10, the maximum degree of clustering being near x = 0.07. The number of atoms per cluster is estimated.

NMR Studies of Mixed Y3?xYbxAl5O12 Crystals

“…Different properties of these crystals, as of any solid solutions, can be strongly influenced by the character of substitutional ordering for mixing components, in the present case, for Y and RE ions, over the crystal sites [3,4]. For the garnet crystals, this factor was not completely studied.…”