High pulsed magnetic field measurements using phase transition in manganities

Abstract

The application of thin manganite films exhibiting colossal magnetoresistance phenomenon for pulsed magnetic field measurements is described. Transport properties of polycrystalline and epitaxial La0.33Ca0.67MnO3 films are investigated at room temperature using pulsed magnetic field up to 40 T. The dependence of output voltage on magnetic field of epitaxial films exhibits "memory" effect and saturation at relatively small magnetic fields. The obtained negligble "memory" effect and independent to magnetic field orientation response of polycrystalline films provides the possibility to use these films for measurements of absolute values of high pulsed magnetic field.