Evolution of magnetic and transport properties in hole doped Y2Ir2O7

8th International Conference on Highly Frustrated Magnetism 2016

Kumar, Harish^1 ; Pramanik, A.K.^1

School of Physical Sciences, Jawaharlal Nehru University, New Delhi

110067, India^1

关键词: Low temperatures;    Magnetic and electrical properties;    Magnetic and transport properties;    Pyrochlores;    Ru-doping;    Structural investigation;    Structural phase transition;    Temperature range;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/828/1/012009/pdf
DOI  :  10.1088/1742-6596/828/1/012009

来源: IOP

【 摘 要 】

We report the effect of Ru4+substitution at Ir-site on structural, magnetic and electrical properties in pyrochlore iridate Y2Ir2O7. Structural investigation has been done using x-ray powder diffraction and Rietveld analysis for both samples. There is no structural phase transition with Ru doping. Magnetization study shows that on slightly substitution of Ru at Ir-site effectively shifts the magnetic irreversible temperature Tirrtowards low temperature and reduce the bifurcation between MZFCand MFCbranches. The electrical resistivity shows an insulating behavior in whole temperature range, however, resistivity decreases with doping of Ru.