Hall Resistivity in Ferromagnetic Manganese-Oxide Compounds
نویسنده
چکیده
Temperature-dependence and magnetic field-dependence of the Hall effect and the magnetic property in manganese-oxide thin films are studied. The spontaneous magnetization and the Hall resistivity are obtained for a various of magnetic fields over all the temperature. It is shown that the Hall resistivity in small magnetic field is to exhibit maximum near the Curie point, and strong magnetic field moves the position of the Hall resistivity peak to much high temperature and suppresses the peak value. The change of the Hall resistance in strong magnetic field may be larger than that of the diagonal ones. The abnormal Hall resistivity in the ferromagnetic manganese-oxide thin-films is attributed to the spin-correlation fluctuation scattering. PACS No.: 73.50.Jt, 73.50.Bk
منابع مشابه
Transport and magnetic properties in ferromagnetic manganese-oxide thin films
The transport and magnetic properties in ferromagnetic manganese-oxide thin films are studied based on the model of the coupling between the mobile d-electrons and the core spins in Mn ions. The spontaneous magnetization and the resistivity are obtained for various magnetic fields and temperature. The resistivity in absence of magnetic field and the magnetoresistance exhibit maxima near the Cur...
متن کاملco nd - m at / 9 90 80 06 v 2 2 S ep 1 99 9 Characterisation , Raman , Magnetic and Resistivity measurements in polycrystalline samples of LaMnO 3 doped with Cd
We report a study of polycrystalline samples of the family La 1-x Cd x MnO 3+δ with different percentage of Mn 4+ ions. X-rays diffraction, Iodometric titration, Raman, Magnetic and Electrical Resistivity measurements provide a general characterisation of the physical properties. Results are qualitatively similar to the ones found in Ca doped manganese perovskites. The substitution of divalent ...
متن کاملHigh Pressure Resistivity Results on Mixed Valent Systems in Which Magnetic Order Is Important*
We discuss high pressure resistivity results on mixed valent cerium and europium systems in which magnetic order plays an important role. In the CeMn2Si2-based systems the magnetic order is due to the manganese sublattice, and the cerium mixed valentfheavy fermion effects persist at least in the ~tife~om~etic~ly ordered phase of these systems. In the EuO system, the europium ferromagnetic order...
متن کاملDomain wall resistivity in epitaxial thin film
This article reviews our recent experimental studies of domain wall (DW) resistivity in epitaxial transition metal ferromagnetic thin film microstructures with stripe domains. The results are presented and analysed in the context of models of DW scattering and conventional magnetoresistance (MR) effects in ferromagnetic metals. Microstructures of progressively higher magnetic anisotropy and thu...
متن کاملStrong antiferromagnetic exchange between manganese phthalocyanine and ferromagnetic europium oxide.
We report on the antiferromagnetic exchange coupling between a submonolayer of Mn(II)-phthalocyanine molecules and a ferromagnetic Eu(II)-oxide thin film. The exchange energy is larger by nearly two orders of magnitude compared to previous studies involving oxidic substrates.
متن کامل