Magnetic properties of the LiMPO4 (M = Co, Ni) compounds

Goñi, Aintzane; Lezama, Luís; Barberis, G. E.; Pizarro, José L.; Arriortua, Marı́a I.; Rojo, Teófilo

doi:10.1016/s0304-8853(96)00394-0

Cited by 73 publications

(43 citation statements)

References 18 publications

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“…Nearest-neighbor (NN) spins in the b-c plane are anti-parallel and the stacking along the a-axis is such that ferromagnetic * electronic mail: jiy@ameslab.gov † electronic mail: vaknin@ameslab.gov sheets perpendicular to the b-axis are formed; nearest neighbor sheets are anti-parallel giving rise to (010) fundamental magnetic reflection that, depending on the direction of the magnetic moment, can be intense or extinct. Earlier neutron diffraction studies of polycrystalline samples showed that the magnetic space group of LiFePO 4 and LiCoPO 4 is Pnma' with the spins oriented along b crystallographic direction (i.e., the (010) reflection is absent), and Pnm'a magnetic space group for LiNiPO 4 and LiMnPO 4 with the spins aligned parallel to the c-axis (i.e., strong intensity at the (010) reflection) [11,12,15,16,17,18]. Recent neutron diffraction measurements of single crystal LiCoPO 4 reported finite intensity at the (010) reflection, interpreted in terms of a ground state with a spin direction that is slightly rotated from the b-axis [12].…”

Section: (B) For Definition Of Exchange Couplings)mentioning

confidence: 99%

Spin-waves in antiferromagnetic single-crystalLiFePO4

Garlea

Zarestky

et al. 2006

Phys. Rev. B

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Spin-wave dispersions in the antiferromagnetic state of single crystal LiFePO4 were determined by inelastic neutron scattering measurements. The dispersion curves measured from the (010) reflection along both a * and b * reciprocal-space directions reflect the anisotropic coupling of the layered Fe 2+ (S = 2) spin-system. The spin-wave dispersion curves were theoretically modeled using linear spin-wave theory by including in the spin-Hamiltonian in-plane nearest-and next-nearest-neighbor interactions (J1 and J2), inter-plane nearest-neighbor interactions (J ⊥ ) and a single-ion anisotropy (D). A weak (010) magnetic peak was observed in elastic neutron scattering studies of the same crystal indicating that the ground state of the staggered iron moments is not along (010) direction, as previously reported from polycrystalline samples studies, but slightly rotated away from this axis.

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Section: (B) For Definition Of Exchange Couplings)mentioning

confidence: 99%

Spin-waves in antiferromagnetic single-crystalLiFePO4

Garlea

Zarestky

et al. 2006

Phys. Rev. B

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“…Actually, the electrical conductivity of LiNiPO 4 is 2-3 decades lower than that for LiCoPO 4 and LiMnPO 4 [188]. Magnetic anisotropy in Li-phosphates and the origin of their magneto-electric properties have been investigated [189,190]. Magnetic properties of LCP and LNP show that antiferromagnetic M-O-M superexchange interactions couple the spins closely in planes parallel to (100) [111].…”

Section: Linipo 4 As 5-v Cathodementioning

confidence: 99%

Polyanionic Compounds as Cathode Materials

et al. 2016

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“…Ni 3 P, Ni 2 P, or NiP 3 ) responsible for enhanced conductivity. Magnetic anisotropy in Li-phosphates and the origin of their magneto-electric properties have been investigated [125,132,133]. Magnetic properties of LCP and LNP show that antiferromagnetic M-O-M superexchange interactions couple the spins closely in planes parallel to (100) [133] with a Néel temperature T N = 21 K. The magnetically ordered phases and spin dynamics of magnetoelectric LiNiPO 4 have been studied in magnetic field as high as 17.3 T along the c axis and up to 16 T along the a-and b-axis [134].…”

Section: Lithium Mn-fe Olivinementioning

confidence: 99%