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https://hdl.handle.net/2445/9722
Title: | Magnetic order or charge-density wave in La2NiO4 by Mössbauer spectroscopy |
Author: | Fontcuberta i Griñó, Josep Longworth, Gary Goodenough, John B. |
Keywords: | Espectroscòpia Mössbauer Mössbauer spectroscopy |
Issue Date: | 1984 |
Publisher: | The American Physical Society |
Abstract: | Measurements of Mössbauer absorption spectra of 57 Fe : La 2 Ni O 4 at 297, 77, and 4.2 K provide evidence, at the lowest temperatures, of magnetic order in a sample containing 57 Fe 3 + -ion impurities and some La 2 + n Ni 1 + n O 4 + 3 n intergrowth. Mössbauer emission spectra of 57 Co : La 2 Ni O 4 at 77 and 4.2 K show magnetic order coexisting with paramagnetism in a sample containing a small concentration of 57 Co -ion impurities and some La 2 + n Ni 1 + n O 4 + 3 n intergrowth. These results are interpreted as evidence for competition between magnetic ordering and charge-density-wave formation among electrons of a narrow σ ∗ x 2 − y 2 band; intergrowths, impurities, and nonstoichiometry favor magnetic ordering. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.30.6320 |
It is part of: | Physical Review B, 1984, vol. 30, núm. 11, p. 6320-6326. |
URI: | https://hdl.handle.net/2445/9722 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.30.6320 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
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