## Abstract

The transverse Hall resistivity, ρ_{xy}, and magnetization, M, of [110] and [100] oriented epitaxial Nd_{0.7}Sr_{0.3}MnO_{3} films with large magnetoresistance were measured as a function of temperature and applied magnetic field to study the ordinary and spontaneous Hall coefficients. In the ferromagnetic regime, 100 K <T<200 K, (-R_{s}/R_{o})×T was found to be proportional to exp(-E_{c}/k_{B}T), where R_{s} is the spontaneous Hall coefficient, R_{o} is the ordinary Hall coefficient, and E_{c} is the core energy of the magnetic dipole. In addition, R_{s} was found to be proportional to ρ_{xx}^{2} in the low-temperature regime (T<160 K) where the ordinary Hall coefficient, R_{o}, is independent of temperature. A scaling behavior, R_{s}∝ρ_{xx} was observed at high temperatures (T>160 K). Hall effects of [110] and [100] oriented films are compared to each other. The results are discussed in terms of the exiting theories.

Original language | English |
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Article number | 174415 |

Pages (from-to) | 1744151-1744156 |

Number of pages | 6 |

Journal | Physical Review B - Condensed Matter and Materials Physics |

Volume | 64 |

Issue number | 17 |

Publication status | Published - 2001 Nov 1 |

## ASJC Scopus subject areas

- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics

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