Electron paramagnetic resonance studies of the insulating ferromagnetic manganite Nd_0.8Pb_0.2MnO_3 above the transition temperature

Anika Kumar (1); Bangalore; Computer; Department of Electrical; H.L. Bhat (2); India); Indian Institute of Science; Janhavi P. Joshi (2); New York; Nilotpal Ghosh (2)

arxiv: cond-mat/0209546 · v1 · submitted 2002-09-24 · ❄️ cond-mat.str-el

Electron paramagnetic resonance studies of the insulating ferromagnetic manganite Nd₀.8Pb₀.2MnO₃ above the transition temperature

Anika Kumar (1) , Nilotpal Ghosh (2) , Janhavi P. Joshi (2) , H.L. Bhat (2) , S.V. Bhat (2) ((1) Indian Academy of Sciences summer fellow , Department of Electrical , Computer , Systems Engineering

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Rensselaer Polytechnic Institute Troy New York USA. (2)Department of Physics Indian Institute of Science Bangalore India)

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keywords temperatureferromagneticstudiesbeenelectronmanganitesmetallicparamagnetic

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Single crystals of Nd_{1-x}Pb_{x}MnO_{3} with x=0.2 are grown by high temperature solution growth technique using PbO-PbF_{2} flux. Magnetization studies on the samples show a transition to a ferromagnetic state below T_c ~ 125 K and the resistivity measurements show it to be an insulator throughout the temperature range 50 - 300 K. Electron Paramagnetic Resonance studies have been performed for T > T_{C} with a view to comparing the results with those on metallic ferromagnetic manganites. The temperature dependence of various parameters like g-value, linewidth and intensity has been studied in the temperature range 150 - 300 K. It is found that they behave in a manner similar to that exhibited by metallic ferromagnetic manganites.

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Electron paramagnetic resonance studies of the insulating ferromagnetic manganite Nd₀.8Pb₀.2MnO₃ above the transition temperature

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