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The material BiFeO3, as one of a few multiferroic materials, has attracted increasing interest due to its high ferroelectric Curie temperature (TC ~1100K) and high antiferromagnetic Néel temperature (TN ~ 650K), which appears to have the best potential applications such as information storage, spintronics, and sensors. Recently, cobalt was doped into BiFeO3 to enhance the ferromagnetism, but the...
Polycrystalline samples La1-xCaxMnO3 have been prepared by sol-gel method. X-ray diffraction patterns show that all the samples are mostly in single phase. Magnetic properties have been measured by Quantum Designed Physical Properties Measurement System. From the measured M - T curves, the samples show a traditional paramagnetic-to-ferromagnetic phase transition near Curie temperature. The Griffiths...
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