Electron paramagnetic resonance study of Cr3+ ions in (NH4)2Co(SO4)2·6H2O single crystal

Ravi, S.; Selvakumar, P.N.; Subramanian, P.

doi:10.1016/j.ssc.2006.02.018

Cited by 10 publications

(1 citation statement)

References 14 publications

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“…So, the different bond lengths along x-and y-axes can be regarded as reasonable, and the orthorhombic Ni 3+ center in DPPH can be understood. The studied Ni 3+ centers in DPPH and PHZS crystals are different from other TM impurity (e.g., Mn 2+ , Cr 3+ , and Fe 3+ [46][47][48] ) centers in the same crystals, with the nondegenerated ground state in the absence of the Jahn-Teller effect. In addition, when the impurity Cu 2+ enters Tutton salts, [14,15,[49][50][51][52] it may also occupy the host Zn 2+ site, but usually presents elongated octahedra instead of the compressed octahedra in the studied systems.…”

Section: Discussionmentioning

confidence: 79%

Theoretical studies of the g factors and local structures of the Ni³⁺ centers in Na₂Zn(SO₄)₂·4H₂O and K₂Zn(SO₄)₂·6H₂O crystals

Chen

Feng

et al. 2020

Magnetic Reson in Chemistry

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The local structures and the g factors gi (i = x, y, z) for Ni3+ centers in Na2Zn(SO4)2·4H2O (DPPH) and K2Zn(SO4)2·6H2O (PHZS) crystals are theoretically studied by using the perturbation formulas of the g factors for a 3d7 ion with low spin (S = 1/2) in orthorhombically compressed octahedra. In these formulas, the contributions to g factors from both the spin‐orbit coupling interactions of the central ion and ligands are taken into account, and the required crystal‐field parameters are estimated from the superposition model and the local geometry of the systems. Based on the calculations, the Ni‐O bonds are found to suffer the axial compression δz (or Δz) of about 0.111 Å (or 0.036 Å) along the z‐axis for Ni3+ centers in DPPH (or PHZS) crystals. Meanwhile, the Ni‐O bonds may experience additional planar bond length variation δx (≈0.015 Å) along x‐ and y‐axes for the orthorhombic Ni3+ center in DPPH. The theoretical g factors agree well with the experimental data. The obtained local structural parameters for both Ni3+ centers are discussed.

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Section: Discussionmentioning

confidence: 79%

Theoretical studies of the g factors and local structures of the Ni³⁺ centers in Na₂Zn(SO₄)₂·4H₂O and K₂Zn(SO₄)₂·6H₂O crystals

Chen

Feng

et al. 2020

Magnetic Reson in Chemistry

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Multifrequency Transition Ion Data Tabulation

Misra

Moncrieff

Diehl

2014

Multifrequency Electron Paramagnetic Resonance

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Thermodynamic properties and phase transitions of Tutton salt (NH4)2Co(SO4)2·6H2O crystals

Lim

2011

J Therm Anal Calorim

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Electron paramagnetic resonance study of Cr3+ ions in (NH4)2Co(SO4)2·6H2O single crystal

Cited by 10 publications

References 14 publications

Theoretical studies of the g factors and local structures of the Ni³⁺ centers in Na₂Zn(SO₄)₂·4H₂O and K₂Zn(SO₄)₂·6H₂O crystals

Theoretical studies of the g factors and local structures of the Ni³⁺ centers in Na₂Zn(SO₄)₂·4H₂O and K₂Zn(SO₄)₂·6H₂O crystals

Multifrequency Transition Ion Data Tabulation

Thermodynamic properties and phase transitions of Tutton salt (NH4)2Co(SO4)2·6H2O crystals

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Electron paramagnetic resonance study of Cr3+ ions in (NH4)2Co(SO4)2·6H2O single crystal

Cited by 10 publications

References 14 publications

Theoretical studies of the g factors and local structures of the Ni3+ centers in Na2Zn(SO4)2·4H2O and K2Zn(SO4)2·6H2O crystals

Theoretical studies of the g factors and local structures of the Ni3+ centers in Na2Zn(SO4)2·4H2O and K2Zn(SO4)2·6H2O crystals

Multifrequency Transition Ion Data Tabulation

Thermodynamic properties and phase transitions of Tutton salt (NH4)2Co(SO4)2·6H2O crystals

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Product

Resources

About

Theoretical studies of the g factors and local structures of the Ni³⁺ centers in Na₂Zn(SO₄)₂·4H₂O and K₂Zn(SO₄)₂·6H₂O crystals

Theoretical studies of the g factors and local structures of the Ni³⁺ centers in Na₂Zn(SO₄)₂·4H₂O and K₂Zn(SO₄)₂·6H₂O crystals