Single crystals of Ln1−x−ySrxPbyMnO3 (Ln: La, Pr, or Nd) with sizes up to 3 cm3 have been obtained using a flux solution of PbF2 and PbO at the temperature range between 917 and 1300 °C. The content of Pb was found to range between 0.26⩽y⩽0.43, depending upon the growing temperature, i.e., the higher the temperature, the lower the Pb content. Transmission electron microscopy studies provided evidence of a nanostructural behavior for Nd0.67Sr0.01Pb0.32MnO3. The crystals exhibit a sharp transition of ferromagnetic metallic to paramagnetic insulating behavior. Resistance measurement was performed in a magnetic field of 0, 2 and 7 T, respectively.
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Lin et al. (1999) studied this question.
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