Neutron diffraction studies on La2-𝑥Dy𝑥Ca2𝑥Ba2Cu4+2𝑥O𝑧 superconductors

Pramana

Rohini Parmar²  M Ramanadham¹  Keka R Chakraborty¹  P S R Krishna¹  D G Kuberkar²  S Rayaprol1 2² 

[1] Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India$$;Department of Physics, Saurashtra University, Rajkot 360 005, India$$

关键词: High 𝑇c superconductor;    Rietveld refinement;    structure.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Structural studies on Dy-substituted La-2125 type superconductors have been carried out by neutron diffraction experiments at room temperature using a monochromatic neutron beam of wavelength (𝜆) = 1.249 Å. A series of samples with La2-𝑥Dy𝑥Ca2𝑥Ba2Cu4+2𝑥O𝑧 stoichiometric composition, for 𝑥 = 0.1-0.5, have been studied for their structural properties. A tetragonal Y-123 unit cell was taken as the starting model for the Rietveld analysis. All the samples fit into the starting model, with no structural transition taking place with increasing dopant concentration. The results of Rietveld analysis and structural properties will be discussed in detail.

【 授权许可】

Unknown