Structural effects in the EPR spectra of Ni3+ in La2Ni0.5Li0.5O4

R. R. Urbano; A. Garcia; E. Granado; J. A. Sanjurjo; I. Torriani; C. Rettori; S. B. Oseroff; A. Hassan; G. B. Martins; Z. Fisk; P. G. Pagliuso; J. L. Sarrao; R. Caciuffo; R. M. Ibberson

doi:10.1103/PhysRevB.62.9593

Structural effects in the EPR spectra of Ni³⁺ in La₂Ni_0.5Li_0.5O₄

R. R. Urbano, A. Garcia, E. Granado, J. A. Sanjurjo, I. Torriani, C. Rettori, S. B. Oseroff, A. Hassan, G. B. Martins, Z. Fisk, P. G. Pagliuso, J. L. Sarrao, R. Caciuffo, R. M. Ibberson

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Abstract

Electron paramagnetic resonance (EPR), Raman scattering, and neutron- and x-ray-diffraction experiments were performed in polycrystalline samples of La₂Ni_0.5Li_0.5O₄ as a function of temperature. Structural studies confirm a partial cation ordering of Ni and Li at the metal sites. As the temperature decreases, EPR measurements show an increasing g-value anisotropy (g⊥ - g∥) and neutron and x-ray-diffraction experiments an increase of the c/a ratio. These results are interpreted in terms of the stabilization of the Ni³⁺(3d⁷) ²A_1g low-spin configuration in the NiO₆ Jahn-Teller distorted octahedra.

Original language	English
Pages (from-to)	9593-9598
Number of pages	6
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	62
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.62.9593
State	Published - Oct 1 2000
Externally published	Yes

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Urbano, R. R., Garcia, A., Granado, E., Sanjurjo, J. A., Torriani, I., Rettori, C., Oseroff, S. B., Hassan, A., Martins, G. B., Fisk, Z., Pagliuso, P. G., Sarrao, J. L., Caciuffo, R., & Ibberson, R. M. (2000). Structural effects in the EPR spectra of Ni³⁺ in La₂Ni_0.5Li_0.5O₄. Physical Review B - Condensed Matter and Materials Physics, 62(14), 9593-9598. https://doi.org/10.1103/PhysRevB.62.9593

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title = "Structural effects in the EPR spectra of Ni3+ in La2Ni0.5Li0.5O4",

abstract = "Electron paramagnetic resonance (EPR), Raman scattering, and neutron- and x-ray-diffraction experiments were performed in polycrystalline samples of La2Ni0.5Li0.5O4 as a function of temperature. Structural studies confirm a partial cation ordering of Ni and Li at the metal sites. As the temperature decreases, EPR measurements show an increasing g-value anisotropy (g⊥ - g∥) and neutron and x-ray-diffraction experiments an increase of the c/a ratio. These results are interpreted in terms of the stabilization of the Ni3+(3d7) 2A1g low-spin configuration in the NiO6 Jahn-Teller distorted octahedra.",

author = "Urbano, {R. R.} and A. Garcia and E. Granado and Sanjurjo, {J. A.} and I. Torriani and C. Rettori and Oseroff, {S. B.} and A. Hassan and Martins, {G. B.} and Z. Fisk and Pagliuso, {P. G.} and Sarrao, {J. L.} and R. Caciuffo and Ibberson, {R. M.}",

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doi = "10.1103/PhysRevB.62.9593",

language = "English",

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Urbano, RR, Garcia, A, Granado, E, Sanjurjo, JA, Torriani, I, Rettori, C, Oseroff, SB, Hassan, A, Martins, GB, Fisk, Z, Pagliuso, PG, Sarrao, JL, Caciuffo, R & Ibberson, RM 2000, 'Structural effects in the EPR spectra of Ni³⁺ in La₂Ni_0.5Li_0.5O₄', Physical Review B - Condensed Matter and Materials Physics, vol. 62, no. 14, pp. 9593-9598. https://doi.org/10.1103/PhysRevB.62.9593

TY - JOUR

T1 - Structural effects in the EPR spectra of Ni3+ in La2Ni0.5Li0.5O4

AU - Urbano, R. R.

AU - Garcia, A.

AU - Granado, E.

AU - Sanjurjo, J. A.

AU - Torriani, I.

AU - Rettori, C.

AU - Oseroff, S. B.

AU - Hassan, A.

AU - Martins, G. B.

AU - Fisk, Z.

AU - Pagliuso, P. G.

AU - Sarrao, J. L.

AU - Caciuffo, R.

AU - Ibberson, R. M.

PY - 2000/10/1

Y1 - 2000/10/1

N2 - Electron paramagnetic resonance (EPR), Raman scattering, and neutron- and x-ray-diffraction experiments were performed in polycrystalline samples of La2Ni0.5Li0.5O4 as a function of temperature. Structural studies confirm a partial cation ordering of Ni and Li at the metal sites. As the temperature decreases, EPR measurements show an increasing g-value anisotropy (g⊥ - g∥) and neutron and x-ray-diffraction experiments an increase of the c/a ratio. These results are interpreted in terms of the stabilization of the Ni3+(3d7) 2A1g low-spin configuration in the NiO6 Jahn-Teller distorted octahedra.

AB - Electron paramagnetic resonance (EPR), Raman scattering, and neutron- and x-ray-diffraction experiments were performed in polycrystalline samples of La2Ni0.5Li0.5O4 as a function of temperature. Structural studies confirm a partial cation ordering of Ni and Li at the metal sites. As the temperature decreases, EPR measurements show an increasing g-value anisotropy (g⊥ - g∥) and neutron and x-ray-diffraction experiments an increase of the c/a ratio. These results are interpreted in terms of the stabilization of the Ni3+(3d7) 2A1g low-spin configuration in the NiO6 Jahn-Teller distorted octahedra.

UR - http://www.scopus.com/inward/record.url?scp=0034289753&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.62.9593

DO - 10.1103/PhysRevB.62.9593

M3 - Article

AN - SCOPUS:0034289753

SN - 0163-1829

VL - 62

SP - 9593

EP - 9598

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 14

ER -

Structural effects in the EPR spectra of Ni³⁺ in La₂Ni_0.5Li_0.5O₄

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