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Neutron Scattering Studies of Pyrochlore Compound Nd2Mo2O7 in Magnetic Field

Yukio Yasui·Satoshi Iikubo·Hiroshi Harashina·Taketomo Kageyama·Masafumi Ito·Masatoshi Sato·Kazuhisa Kakurai
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Abstract

Neutron diffraction studies have been carried out in the applied magnetic field H(//[011]) on a single crystal of pyrochlore ferromagnet Nd2Mo2O7, whose Hall resistivity(r_H) has been reported to have quite unusual magnetic field (H)- and temperature (T)- dependences. The intensities of the observed magnetic reflections have been reproduced at 1.6 K as a function of H, by considering the change of the magnetic structure with H, where effects of the exchange fields at the Mo and Nd sites induced by the Mo-Mo and Mo-Nd exchange interactions and the single ion anisotropies of Mo- and Nd- moments are considered. From the H-dependent magnetic structure, the H-dependence of r_H has been calculated by using the chiral order mechanism. By comparing the result with the H-dependence of the observed r_H, it is found that the chiral order mechanism does not work well in the present system.

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Yukio Yasui, Satoshi Iikubo, Hiroshi Harashina, Taketomo Kageyama, Masafumi Ito, Masatoshi Sato, Kazuhisa Kakurai. 2002-11-18. Neutron Scattering Studies of Pyrochlore Compound Nd2Mo2O7 in Magnetic Field. https://doi.org/10.1143/jpsj.72.865

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