Electric field gradient at nuclei on orthorhombic sites in CaF2 and SrCl2 : comparison with electronic zero-field splitting

D. Ormondt, van; J. Andriessen; J.A.M. Dam; M.A. Ast, van; H.W. Hartog, den; E.J. Bijvank

doi:10.1088/0022-3719/12/13/028

Electric field gradient at nuclei on orthorhombic sites in CaF2 and SrCl2 : comparison with electronic zero-field splitting

D. Ormondt, van, J. Andriessen, J.A.M. Dam, M.A. Ast, van, H.W. Hartog, den, E.J. Bijvank

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Abstract

The electric field gradients (EFG) Vzz and Vxx-Vyy at the nucleus of 157Gd3+ have been determined, using ENDOR, for CaF2:Gd3+M+(M+=Li,K+) and SrCl2:Gd3+Na+. The results are compared with the electronic zero-field splitting parameters of Gd3+, B20 and B22 for the same sites. A simple relation between the EFG and B20 and B22, which is expected because the host crystals are ionic, is not found. The EFG at the nucleus of Na+ in SrCl2:Gd3+Na+ have also been determined, along with the magnetic dipole hyperfine interaction between this nucleus and Gd3+. The strength of the latter interaction reveals that the Gd3+-Na+ distance is at least 0.1 AA larger than the corresponding Sr2+-Sr2+ distance.

Original language	English
Pages (from-to)	2659-2670
Journal	Journal of Physics C: Solid State Physics
Volume	12
Issue number	13
DOIs	https://doi.org/10.1088/0022-3719/12/13/028
Publication status	Published - 1979

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@article{c73d1111343d4c3e8150275cc4a01efc,

title = "Electric field gradient at nuclei on orthorhombic sites in CaF2 and SrCl2 : comparison with electronic zero-field splitting",

abstract = "The electric field gradients (EFG) Vzz and Vxx-Vyy at the nucleus of 157Gd3+ have been determined, using ENDOR, for CaF2:Gd3+M+(M+=Li,K+) and SrCl2:Gd3+Na+. The results are compared with the electronic zero-field splitting parameters of Gd3+, B20 and B22 for the same sites. A simple relation between the EFG and B20 and B22, which is expected because the host crystals are ionic, is not found. The EFG at the nucleus of Na+ in SrCl2:Gd3+Na+ have also been determined, along with the magnetic dipole hyperfine interaction between this nucleus and Gd3+. The strength of the latter interaction reveals that the Gd3+-Na+ distance is at least 0.1 AA larger than the corresponding Sr2+-Sr2+ distance.",

author = "{Ormondt, van}, D. and J. Andriessen and J.A.M. Dam and {Ast, van}, M.A. and {Hartog, den}, H.W. and E.J. Bijvank",

year = "1979",

doi = "10.1088/0022-3719/12/13/028",

language = "English",

volume = "12",

pages = "2659--2670",

journal = "Journal of Physics C: Solid State Physics",

issn = "0022-3719",

publisher = "Institute of Physics",

number = "13",

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TY - JOUR

T1 - Electric field gradient at nuclei on orthorhombic sites in CaF2 and SrCl2 : comparison with electronic zero-field splitting

AU - Ormondt, van, D.

AU - Andriessen, J.

AU - Dam, J.A.M.

AU - Ast, van, M.A.

AU - Hartog, den, H.W.

AU - Bijvank, E.J.

PY - 1979

Y1 - 1979

N2 - The electric field gradients (EFG) Vzz and Vxx-Vyy at the nucleus of 157Gd3+ have been determined, using ENDOR, for CaF2:Gd3+M+(M+=Li,K+) and SrCl2:Gd3+Na+. The results are compared with the electronic zero-field splitting parameters of Gd3+, B20 and B22 for the same sites. A simple relation between the EFG and B20 and B22, which is expected because the host crystals are ionic, is not found. The EFG at the nucleus of Na+ in SrCl2:Gd3+Na+ have also been determined, along with the magnetic dipole hyperfine interaction between this nucleus and Gd3+. The strength of the latter interaction reveals that the Gd3+-Na+ distance is at least 0.1 AA larger than the corresponding Sr2+-Sr2+ distance.

AB - The electric field gradients (EFG) Vzz and Vxx-Vyy at the nucleus of 157Gd3+ have been determined, using ENDOR, for CaF2:Gd3+M+(M+=Li,K+) and SrCl2:Gd3+Na+. The results are compared with the electronic zero-field splitting parameters of Gd3+, B20 and B22 for the same sites. A simple relation between the EFG and B20 and B22, which is expected because the host crystals are ionic, is not found. The EFG at the nucleus of Na+ in SrCl2:Gd3+Na+ have also been determined, along with the magnetic dipole hyperfine interaction between this nucleus and Gd3+. The strength of the latter interaction reveals that the Gd3+-Na+ distance is at least 0.1 AA larger than the corresponding Sr2+-Sr2+ distance.

U2 - 10.1088/0022-3719/12/13/028

DO - 10.1088/0022-3719/12/13/028

M3 - Article

SN - 0022-3719

VL - 12

SP - 2659

EP - 2670

JO - Journal of Physics C: Solid State Physics

JF - Journal of Physics C: Solid State Physics

IS - 13

ER -

Electric field gradient at nuclei on orthorhombic sites in CaF2 and SrCl2 : comparison with electronic zero-field splitting

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