We report direct evidence for quintuplet spin states in a particular kind of reduced TiO2 anatase obtained by the mild oxidation of TiB2 under hydrothermal conditions. Continuous-wave and pulse EPR spectroscopy at X and Q band frequencies provide compelling evidence for the presence of S=2 states, stable in a wide range of temperatures up to room temperature. A tentative model, corroborated by spin-polarized DFT calculations, is proposed, which consists of four ferromagnetically interacting Ti3+ ions with distances ranging from 0.5 nm to 0.8 nm and tetrahedral arrangement.
Chiesa, M., Livraghi, S., Giamello, E., Albanese, E., & Pacchioni, G. (2017). Ferromagnetic Interactions in Highly Stable, Partially Reduced TiO2: The S=2 State in Anatase. ANGEWANDTE CHEMIE. INTERNATIONAL EDITION, 56(10), 2604-2607.
Citazione: | Chiesa, M., Livraghi, S., Giamello, E., Albanese, E., & Pacchioni, G. (2017). Ferromagnetic Interactions in Highly Stable, Partially Reduced TiO2: The S=2 State in Anatase. ANGEWANDTE CHEMIE. INTERNATIONAL EDITION, 56(10), 2604-2607. |
Tipo: | Articolo in rivista - Articolo scientifico |
Carattere della pubblicazione: | Scientifica |
Presenza di un coautore afferente ad Istituzioni straniere: | No |
Titolo: | Ferromagnetic Interactions in Highly Stable, Partially Reduced TiO2: The S=2 State in Anatase |
Autori: | Chiesa, M; Livraghi, S; Giamello, E; Albanese, E; Pacchioni, G |
Autori: | ALBANESE, ELISA (Penultimo) PACCHIONI, GIANFRANCO (Ultimo) |
Data di pubblicazione: | 2017 |
Lingua: | English |
Rivista: | ANGEWANDTE CHEMIE. INTERNATIONAL EDITION |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1002/anie.201610973 |
Appare nelle tipologie: | 01 - Articolo su rivista |