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Crystal structure, superconductivity and magnetic properties of the superconducting ferromagnets Gd1.4−xDyxCe0.6Sr2RuCu2O10 (x=0–0.6) |
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| Authors: | S Kalavathi J Janaki G V R Reddy G V N Rao V Sankara Sastry Y Hariharan |
| Institution: | a Materials Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India b International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur, Hyderabad 500 005, Andhra Pradesh, India |
| Abstract: | The structural, electrical and magnetic properties of the superconducting ferromagnets, Gd1.4?xDyxCe0.6Sr2RuCu2O10 (x=0–0.6) are systematically investigated as a function of Dy doping and temperature. These compounds are characterized by high temperature superconductivity (Tc ranging from 20 to 40 K depending upon the Dy content) co-existing with weak ferromagnetism with two magnetic transitions (TM2 ranging from 95 to 106 K and TM1 around 120 K). Doping with Dy gives no significant structural changes except for a minor change in the c/a ratio. However the superconducting transition temperature is significantly suppressed and magnetic ordering temperature enhanced on Dy doping. These effects are described and discussed. |
| Keywords: | Rutheno-cuprates Superconductivity Magnetism |
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