Crystal growth and doping control of HgBa2CuO4+δ, the model compound for high-Tc superconductors

被引：7

作者：

Legros, A. ^{[1
,4
]}

Loret, B. ^{[1
,4
,6
]}

Forget, A. ^{[1
]}

Bonnaillie, P. ^{[2
]}

Collin, G. ^{[5
]}

Thuery, P. ^{[3
]}

Sacuto, A. ^{[6
]}

Colson, D. ^{[1
]}

机构：

[1] CEA, SPEC, CNRS, UMR 3680, F-91191 Gif Sur Yvette, France

[2] CEA, SRMP, DMN, F-91191 Gif Sur Yvette, France

[3] Univ Paris Saclay, ARMEE, CNRS, CEA, F-91191 Gif Sur Yvette, France

[4] Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada

[5] Univ Paris Saclay, CNRS, UMR 8502, LPS, F-91405 Orsay, France

[6] Lab Mat & Phertomenes Quant, 10 Rue Domon & L Duquet, F-75205 Paris 13, France

来源：

MATERIALS RESEARCH BULLETIN | 2019年 / 118卷

关键词：

Superconductors; Crystal growth; Magnetic properties; X-ray diffraction; Raman spectroscopy; X-RAY-DIFFRACTION; SINGLE-CRYSTAL; HGBA2CA2CU3O8+DELTA; TEMPERATURE; 150-K;

D O I：

10.1016/j.materresbull.2019.05.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A self-flux method to grow very high quality single crystals of the superconducting HgBa2CuO4+delta mercury cuprates is reported. The single crystals are platelet-shaped, with surfaces of high optical quality and good crystallographic properties. Annealing enables optimization of T-c up to T-c(max) = 94 K. With adequate treatment, the doping level of the crystalline samples can be finely controlled in a wide under- and over-doped range. Preliminary structural characterization from single crystal X-ray diffraction data is given for different doping levels. The signature of under- and over-doping for both pure and gold-substituted crystals has been identified from micro-Raman spectroscopy measurements.

引用

页数：5

共 28 条

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