Nuclear Magnetic Resonance Study of Fe^<3+> Ions on A-sites of Fe_3O_4 in the Low-Temperature Phase : Condensed Matter: Electronic Properties, etc.
スポンサーリンク
概要
- 論文の詳細を見る
The hyperfine field spectra of Fe^<3+> ions on A-sites have been investigated at 4.2 K by Nuclear Magnetic Resonance. From the spectra of the magnetically single domain specimen in an external magnetic field, it has been confirmed that at least eight inequivalent A-sites exist. The directions of the principal and subprincipal axes of the anisotropic hyperfine field were determined for five sites, and one of the sites has mirror symmetry with reference to the ac-plane. This cannot be explained by the symmetry groups C_c and c-glide which have been proposed by diffraction studies. For the sites with a lower hyperfine magnetic field (≦508.5 kOe), the anisotropic part of the field is appreciably larger than the dipole field from the nearest-neighbour Fe ions on the B-sites. This result suggests a delocalization of the electron cloud of neighboring B-sites.
- 2000-05-15
著者
-
MIZOGUCHI Moriji
College of Liberal Arts and Sciences, Tokyo Medical and Dental University
-
Mizoguchi Moriji
College Of Liberal Arts And Science Tokyo Medical And Dental University
関連論文
- ^Mn NMR in Ferromagnetic Perovskites RENi_Mn_O_3 (RE=Rare Earth Element)(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Magnetic Properties of REMe_Mn_O_3(RE=Rare Earth Element,Me=Ni,Co)
- NMR Study on the Supertransferred Hyperfine Magnetic Field at ^55Mn in Ferromagnetic Perovskites La (Co_Mg_x)_Mn_O_3
- Nuclear Magnetic Resonance Study of Fe^ Ions on A-sites of Fe_3O_4 in the Low-Temperature Phase : Condensed Matter: Electronic Properties, etc.
- Charge and Orbital Ordering Structure of Fe_3O_4 in the Low-Temperature Phase as Deduced from NMR Study
- ^Mn NMR in Ferromagnetic Perovskites RENi_Mn_O_3 (RE=Rare Earth Element)(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Charge and Orbital Ordering Structure of Fe3O4 in the Low-Temperature Phase as Deduced from NMR Study