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THE EFFECT OF La AND Sn DOPING ON THE STRUCTURAL AND MAGNETIC PROPERTIES OF RuSr₂EuCeCu₂O_z

H. K. LEE

Department of Physics, Kangwon National University, Chunchon 200-701, Republic of Korea

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H. M. Park

Korea Research Institute of Standards and Science, Taejon 305-600, Republic of Korea

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, and

G. V. M. Williams

Industrial Research, P.O.Box 31310, Lower Hutt, New Zealand

The MacDiarmid Institute, Victoria University, Private Bag 600, Wellinton, New Zealand

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https://doi.org/10.1142/S0217979205028566Cited by:7 (Source: Crossref)

Abstract

The crystal structure and magnetic properties of (Ru_1-xSn_x)Sr₂EuCeCu₂O_z and Ru(Sr_2-xLa_x)EuCeCu₂O_z(0≤x≤0.1) samples have been investigated to shed light on the doping-induced changes in the magnetic properties of Ru-1222 system. We show that La substitution for Sr leads to an increase in the temperature where the ferromagnetic component is observed and a moderate suppression of the ferromagnetic component whereas Sn substitution for Ru results in a significant decrease of the volume fraction of the ferromagnetic phase as well as a decrease in the magnetic ordering temperature. The experimental results are discussed in connection with the structural data studied by Rietveld refinement of the x-ray diffraction data.

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