Eu Doping in the GdCd_7.88 Quasicrystal and Its Approximant Crystal GdCd₆.

ABSTRACT: The effect of Eu doping in the Tsai quasicrystal (QC) GdCd_7.88 and its periodic 1/1 approximant crystal (AC) GdCd₆ are investigated. This represents the first synthesis of Eu-containing stable QC samples, where three samples with the final composition Gd_1-xEu_xCd_7.6±α at Eu doping concentrations x = 0.06, 0.13, and 0.19 are obtained (α ∼ 0.2). They are compared to two 1/1 ACs with compositions Gd_1-xEu_xCd₆ (x = 0.12, 0.16). In addition, a new type of 1/1 AC, differing only by the inclusion of extra Cd sites unique to the Eu₄Cd₂₅ 1/1 AC, has been discovered and synthesized for the concentrations Gd_1-xEu_xCd

SUBMITTER: Denoel F 

PROVIDER: S-EPMC10951946 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature