Growth and investigation of LaxRE1-xF3 (RE=Ce,Pr,Nd) single crystals

Mieczyslaw L. Paradowski; Wieslawa Korczak; Lucjan E. Misiak; Zbigniew Korczak

doi:10.1117/12.343026

24 March 1999 Growth and investigation of La_xRE_1-xF₃ (RE=Ce,Pr,Nd) single crystals

Mieczyslaw L. Paradowski, Wieslawa Korczak, Lucjan E. Misiak, Zbigniew Korczak

Proceedings Volume 3724, International Conference on Solid State Crystals '98: Single Crystal Growth, Characterization, and Applications; (1999) https://doi.org/10.1117/12.343026
Event: International Conference on Solid State Crystals '98, 1998, Zakopane, Poland

Abstract

The mixed La_xRE_1-xF₃ (RE equals Ce, Pr, Nd) single crystals doped with Gd³⁺ (0.1 mol%) were grown by a modified Bridgmann-Stockbarger method using an induction furnace. The quality of crystals were controlled by X-ray diffraction and EPR technique, in addition the observation of defects with the polarizing microscope after chemical etching with acid was performed. The behavior of surrounding Gd³⁺ ions in hexagonal matrices was investigated at different temperatures (4.2 - 300 K), analyzing EPR data in the light of the superposition model. The distortion of the site symmetry of Gd³⁺ ions from the C_2v towards C₂ was observed in La_0.9Nd_0.1F₃ at 4.2 K. The low temperature magnetic ordering was determined to be antiferromagnetic (T_N equals 0.4 K for NdF₃ and T_N equals 0.03 K for La_0.9Nd_0.1F₃ using the molecular field theory).

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Mieczyslaw L. Paradowski, Wieslawa Korczak, Lucjan E. Misiak, and Zbigniew Korczak "Growth and investigation of La_xRE_1-xF₃ (RE=Ce,Pr,Nd) single crystals", Proc. SPIE 3724, International Conference on Solid State Crystals '98: Single Crystal Growth, Characterization, and Applications, (24 March 1999); https://doi.org/10.1117/12.343026

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