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G Blasse - One of the best experts on this subject based on the ideXlab platform.
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Study of the Vibronic Transitions of Gd3+and Eu3+in Crystalline Materials and Glasses of the Same Composition
IEEE Journal of Solid-state Circuits, 1998Co-Authors: A Ellens, Andries Meijerink, B. Salemink, G BlasseAbstract:Abstract The electron–phonon Coupling Strength of Gd 3+ and Eu 3+ ions in crystalline and glass phases of the same chemical composition are studied by measuring the vibronic transition probabilities of the 4f n transitions of these ions. The experimentally derived vibronic transition probabilities are very small. Within the experimental error, the electron–phonon Coupling Strength of the lanthanide ions in the different phases is the same.
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spectral line broadening study of the trivalent lanthanide ion series i line broadening as a probe of the electron phonon Coupling Strength
Physical Review B, 1997Co-Authors: A Ellens, H Andres, Andries Meijerink, G BlasseAbstract:Line broadening is evaluated as a method to probe an electron-phonon Coupling Strength of lanthanide ions. Various problems which complicate the analysis of line broadening, like a contribution of different relaxation processes and the difference in behavior for different transitions in the same system are discussed, using ${\mathrm{LiYF}}_{4}$ :${\mathrm{Eu}}^{3+}$ and ${\mathrm{LiYF}}_{4}$ :${\mathrm{Pr}}^{3+}$ as examples.mThe results show that the electron-phonon Coupling parameter \ensuremath{\alpha}-bar, derived from a fit to the Raman two-phonon process for different transitions, provides a good estimate of an electron-phonon Coupling Strength. In a second paper this line-broadening method is used to probe the variation of the electron-phonon Coupling Strength through the trivalent lanthanide-ion series.
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spectral line broadening study of the trivalent lanthanide ion series ii the variation of the electron phonon Coupling Strength through the series
Physical Review B, 1997Co-Authors: A Ellens, H Andres, Andries Meijerink, M L H Ter Heerdt, Rene Theodorus Wegh, G BlasseAbstract:The variation of an electron-phonon Coupling Strength of lanthanide ions is evaluated by measuring the temperature-dependent line broadening of a large number of 4f transitions of nine lanthanide ions. The results show that the electron-phonon Coupling Strength derived from these line-broadening experiments is large in the beginning (${\mathrm{Ce}}^{3+}$,${\mathrm{Pr}}^{3+}$,${\mathrm{Nd}}^{3+}$ ) and the end (${\mathrm{Er}}^{3+}$,${\mathrm{Tm}}^{3+}$,${\mathrm{Yb}}^{3+}$ ) of the trivalent lanthanide-ion series, but small at the center (${\mathrm{Eu}}^{3+}$,${\mathrm{Gd}}^{3+}$,${\mathrm{Tb}}^{3+}$ ). This trend can qualitatively be explained by the lanthanide contraction and the shielding of the 4f electrons.
A Ellens - One of the best experts on this subject based on the ideXlab platform.
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Study of the Vibronic Transitions of Gd3+and Eu3+in Crystalline Materials and Glasses of the Same Composition
IEEE Journal of Solid-state Circuits, 1998Co-Authors: A Ellens, Andries Meijerink, B. Salemink, G BlasseAbstract:Abstract The electron–phonon Coupling Strength of Gd 3+ and Eu 3+ ions in crystalline and glass phases of the same chemical composition are studied by measuring the vibronic transition probabilities of the 4f n transitions of these ions. The experimentally derived vibronic transition probabilities are very small. Within the experimental error, the electron–phonon Coupling Strength of the lanthanide ions in the different phases is the same.
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spectral line broadening study of the trivalent lanthanide ion series i line broadening as a probe of the electron phonon Coupling Strength
Physical Review B, 1997Co-Authors: A Ellens, H Andres, Andries Meijerink, G BlasseAbstract:Line broadening is evaluated as a method to probe an electron-phonon Coupling Strength of lanthanide ions. Various problems which complicate the analysis of line broadening, like a contribution of different relaxation processes and the difference in behavior for different transitions in the same system are discussed, using ${\mathrm{LiYF}}_{4}$ :${\mathrm{Eu}}^{3+}$ and ${\mathrm{LiYF}}_{4}$ :${\mathrm{Pr}}^{3+}$ as examples.mThe results show that the electron-phonon Coupling parameter \ensuremath{\alpha}-bar, derived from a fit to the Raman two-phonon process for different transitions, provides a good estimate of an electron-phonon Coupling Strength. In a second paper this line-broadening method is used to probe the variation of the electron-phonon Coupling Strength through the trivalent lanthanide-ion series.
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spectral line broadening study of the trivalent lanthanide ion series ii the variation of the electron phonon Coupling Strength through the series
Physical Review B, 1997Co-Authors: A Ellens, H Andres, Andries Meijerink, M L H Ter Heerdt, Rene Theodorus Wegh, G BlasseAbstract:The variation of an electron-phonon Coupling Strength of lanthanide ions is evaluated by measuring the temperature-dependent line broadening of a large number of 4f transitions of nine lanthanide ions. The results show that the electron-phonon Coupling Strength derived from these line-broadening experiments is large in the beginning (${\mathrm{Ce}}^{3+}$,${\mathrm{Pr}}^{3+}$,${\mathrm{Nd}}^{3+}$ ) and the end (${\mathrm{Er}}^{3+}$,${\mathrm{Tm}}^{3+}$,${\mathrm{Yb}}^{3+}$ ) of the trivalent lanthanide-ion series, but small at the center (${\mathrm{Eu}}^{3+}$,${\mathrm{Gd}}^{3+}$,${\mathrm{Tb}}^{3+}$ ). This trend can qualitatively be explained by the lanthanide contraction and the shielding of the 4f electrons.
Andries Meijerink - One of the best experts on this subject based on the ideXlab platform.
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Study of the Vibronic Transitions of Gd3+and Eu3+in Crystalline Materials and Glasses of the Same Composition
IEEE Journal of Solid-state Circuits, 1998Co-Authors: A Ellens, Andries Meijerink, B. Salemink, G BlasseAbstract:Abstract The electron–phonon Coupling Strength of Gd 3+ and Eu 3+ ions in crystalline and glass phases of the same chemical composition are studied by measuring the vibronic transition probabilities of the 4f n transitions of these ions. The experimentally derived vibronic transition probabilities are very small. Within the experimental error, the electron–phonon Coupling Strength of the lanthanide ions in the different phases is the same.
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spectral line broadening study of the trivalent lanthanide ion series i line broadening as a probe of the electron phonon Coupling Strength
Physical Review B, 1997Co-Authors: A Ellens, H Andres, Andries Meijerink, G BlasseAbstract:Line broadening is evaluated as a method to probe an electron-phonon Coupling Strength of lanthanide ions. Various problems which complicate the analysis of line broadening, like a contribution of different relaxation processes and the difference in behavior for different transitions in the same system are discussed, using ${\mathrm{LiYF}}_{4}$ :${\mathrm{Eu}}^{3+}$ and ${\mathrm{LiYF}}_{4}$ :${\mathrm{Pr}}^{3+}$ as examples.mThe results show that the electron-phonon Coupling parameter \ensuremath{\alpha}-bar, derived from a fit to the Raman two-phonon process for different transitions, provides a good estimate of an electron-phonon Coupling Strength. In a second paper this line-broadening method is used to probe the variation of the electron-phonon Coupling Strength through the trivalent lanthanide-ion series.
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spectral line broadening study of the trivalent lanthanide ion series ii the variation of the electron phonon Coupling Strength through the series
Physical Review B, 1997Co-Authors: A Ellens, H Andres, Andries Meijerink, M L H Ter Heerdt, Rene Theodorus Wegh, G BlasseAbstract:The variation of an electron-phonon Coupling Strength of lanthanide ions is evaluated by measuring the temperature-dependent line broadening of a large number of 4f transitions of nine lanthanide ions. The results show that the electron-phonon Coupling Strength derived from these line-broadening experiments is large in the beginning (${\mathrm{Ce}}^{3+}$,${\mathrm{Pr}}^{3+}$,${\mathrm{Nd}}^{3+}$ ) and the end (${\mathrm{Er}}^{3+}$,${\mathrm{Tm}}^{3+}$,${\mathrm{Yb}}^{3+}$ ) of the trivalent lanthanide-ion series, but small at the center (${\mathrm{Eu}}^{3+}$,${\mathrm{Gd}}^{3+}$,${\mathrm{Tb}}^{3+}$ ). This trend can qualitatively be explained by the lanthanide contraction and the shielding of the 4f electrons.
A J Ferguson - One of the best experts on this subject based on the ideXlab platform.
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identification of spin wave modes strongly coupled to a co axial cavity
arXiv: Materials Science, 2015Co-Authors: N J Lambert, J A Haigh, A J FergusonAbstract:We demonstrate, at room temperature, the strong Coupling of the fundamental and non-uniform magnetostatic modes of an yttrium iron garnet (YIG) ferrimagnetic sphere to the electromagnetic modes of a co-axial cavity. The well-defined field profile within the cavity yields a specific Coupling Strength for each magnetostatic mode. We experimentally measure the Coupling Strength for the different magnetostatic modes and, by calculating the expected Coupling Strengths, are able to identify the modes themselves.
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identification of spin wave modes in yttrium iron garnet strongly coupled to a co axial cavity
Journal of Applied Physics, 2015Co-Authors: N J Lambert, J A Haigh, A J FergusonAbstract:We demonstrate, at room temperature, the strong Coupling of the fundamental and non-uniform magnetostatic modes of an yttrium iron garnet ferrimagnetic sphere to the electromagnetic modes of a co-axial cavity. The well-defined field profile within the cavity yields a specific Coupling Strength for each magnetostatic mode. We experimentally measure the Coupling Strength for the different magnetostatic modes and, by calculating the expected Coupling Strengths, we are able to identify the modes themselves.
H Andres - One of the best experts on this subject based on the ideXlab platform.
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spectral line broadening study of the trivalent lanthanide ion series i line broadening as a probe of the electron phonon Coupling Strength
Physical Review B, 1997Co-Authors: A Ellens, H Andres, Andries Meijerink, G BlasseAbstract:Line broadening is evaluated as a method to probe an electron-phonon Coupling Strength of lanthanide ions. Various problems which complicate the analysis of line broadening, like a contribution of different relaxation processes and the difference in behavior for different transitions in the same system are discussed, using ${\mathrm{LiYF}}_{4}$ :${\mathrm{Eu}}^{3+}$ and ${\mathrm{LiYF}}_{4}$ :${\mathrm{Pr}}^{3+}$ as examples.mThe results show that the electron-phonon Coupling parameter \ensuremath{\alpha}-bar, derived from a fit to the Raman two-phonon process for different transitions, provides a good estimate of an electron-phonon Coupling Strength. In a second paper this line-broadening method is used to probe the variation of the electron-phonon Coupling Strength through the trivalent lanthanide-ion series.
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spectral line broadening study of the trivalent lanthanide ion series ii the variation of the electron phonon Coupling Strength through the series
Physical Review B, 1997Co-Authors: A Ellens, H Andres, Andries Meijerink, M L H Ter Heerdt, Rene Theodorus Wegh, G BlasseAbstract:The variation of an electron-phonon Coupling Strength of lanthanide ions is evaluated by measuring the temperature-dependent line broadening of a large number of 4f transitions of nine lanthanide ions. The results show that the electron-phonon Coupling Strength derived from these line-broadening experiments is large in the beginning (${\mathrm{Ce}}^{3+}$,${\mathrm{Pr}}^{3+}$,${\mathrm{Nd}}^{3+}$ ) and the end (${\mathrm{Er}}^{3+}$,${\mathrm{Tm}}^{3+}$,${\mathrm{Yb}}^{3+}$ ) of the trivalent lanthanide-ion series, but small at the center (${\mathrm{Eu}}^{3+}$,${\mathrm{Gd}}^{3+}$,${\mathrm{Tb}}^{3+}$ ). This trend can qualitatively be explained by the lanthanide contraction and the shielding of the 4f electrons.
