Magnetization study of mercurocuprate (Hg,Re)Sr2CuO4+𝛿

Pramana

P Selvam1¹  J V Yakhmi²  S Balamurugan¹  I K Gopalakrishnan² 

[1] Department of Chemistry, Indian Institute of Technology, Powai, Mumbai 400 076, India$$;Novel Materials and Structural Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India$$

关键词: Superconductivity;    Hg-cuprate;    magnetization;    magnetic hysteresis.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

The nominal (Hg1-𝑥Re𝑥)Sr2CuO4+𝛿 (𝑥 = 0.10 and 0.20) samples were synthesized at ∼ 920° C in partial vacuum. The compound with 𝑥=0.10 exhibits superconductivity at ∼ 54 K while the composition 𝑥 = 0.20 is non-superconducting down to 5 K. On cooling below 10 K in an applied field of 4 kOe, the former causes a noticeable upturn in the field cooled (FC) magnetization signal. Such a change in magnetic response is also reflected in the magnetic hysteresis loop generated at 9 K. We attribute this effect to a paramagnetic contribution arising from Re in (Hg,Re)-1201 phase.

【 授权许可】

Unknown