Orbital frustration at the origin of the magnetic behavior in LiNiO2
We report on the ESR, magnetization, and magnetic susceptibility measurements performed over a large temperature range, from 1.5 to 750 K, on high-quality stoichiometric LiNiO2. We find that this compound displays two distinct temperature regions where its magnetic behavior is anomalous. With the he...
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| Veröffentlicht in: | Physical review letters 2001-04, Vol.86 (16), p.3638-3641 |
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| container_title | Physical review letters |
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| creator | Reynaud, F Mertz, D Celestini, F Debierre, J M Ghorayeb, A M Simon, P Stepanov, A Voiron, J Delmas, C |
| description | We report on the ESR, magnetization, and magnetic susceptibility measurements performed over a large temperature range, from 1.5 to 750 K, on high-quality stoichiometric LiNiO2. We find that this compound displays two distinct temperature regions where its magnetic behavior is anomalous. With the help of a statistical model based on the Kugel'-Khomskii Hamiltonian, we show that below T(of) approximately 400 K, an orbitally frustrated state characteristic of the triangular lattice is established. This then gives a solution to the long-standing controversial problem of the magnetic behavior in LiNiO2. |
| doi_str_mv | 10.1103/PhysRevLett.86.3638 |
| format | Article |
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| subjects | Chemical Sciences Condensed Matter Material chemistry Materials Science Physics Statistical Mechanics |
| title | Orbital frustration at the origin of the magnetic behavior in LiNiO2 |
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