Electron paramagnetic resonance of Gd3+ in platinum

M. Hardiman, J. Pellisson, Stewart Barnes, P. E. Bisson, M. Peter

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We have observed the electron paramagnetic resonance (EPR) of Gd3+ in both polycrystalline and single-crystal samples of dilute Pt: Gd alloys. The polycrystalline samples display a single resonance line whose thermal broadening is concentration dependent. Fully resolved fine structure appropriate to Gd3+ in a cubic environment is obtained from the single-crystal samples. From these results a value for b40 of +86 G is deduced, a value some three times larger than that found to date in any other cubic pure metals. It is shown conclusively that the experimental spectra from the single-crystal samples consist of the resolved single-ion fine-structure spectrum and an additional "cluster" line with the same g value as the single-ion spectrum. For most directions in the {110} plane excellent agreement is obtained between the single-ion spectra and those simulated using the Barnes-Plefka motional-narrowing theory. The existence and behavior of the "cluster" line is qualitatively explained in terms of a cross-relaxation process. Finally it is shown that the excitation energy E for the process 4f74f8 as involved in EPR is not the same as measured by optical experiments such as x-ray photoemission spectroscopy. A theory which describes this is capable of explaining the experimental exchange and crystal-field parameters.

Original languageEnglish (US)
Pages (from-to)2175-2194
Number of pages20
JournalPhysical Review B
Volume22
Issue number5
DOIs
StatePublished - 1980

Fingerprint

Platinum
Paramagnetic resonance
electron paramagnetic resonance
platinum
Single crystals
Ions
single crystals
Excitation energy
fine structure
Relaxation processes
Photoelectron spectroscopy
ions
cross relaxation
Metals
resonance lines
crystal field theory
X rays
Crystals
photoelectric emission
Experiments

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Hardiman, M., Pellisson, J., Barnes, S., Bisson, P. E., & Peter, M. (1980). Electron paramagnetic resonance of Gd3+ in platinum. Physical Review B, 22(5), 2175-2194. https://doi.org/10.1103/PhysRevB.22.2175

Electron paramagnetic resonance of Gd3+ in platinum. / Hardiman, M.; Pellisson, J.; Barnes, Stewart; Bisson, P. E.; Peter, M.

In: Physical Review B, Vol. 22, No. 5, 1980, p. 2175-2194.

Research output: Contribution to journalArticle

Hardiman, M, Pellisson, J, Barnes, S, Bisson, PE & Peter, M 1980, 'Electron paramagnetic resonance of Gd3+ in platinum', Physical Review B, vol. 22, no. 5, pp. 2175-2194. https://doi.org/10.1103/PhysRevB.22.2175
Hardiman, M. ; Pellisson, J. ; Barnes, Stewart ; Bisson, P. E. ; Peter, M. / Electron paramagnetic resonance of Gd3+ in platinum. In: Physical Review B. 1980 ; Vol. 22, No. 5. pp. 2175-2194.
@article{9e546d807b5e427eaf1c92de8d53c7b8,
title = "Electron paramagnetic resonance of Gd3+ in platinum",
abstract = "We have observed the electron paramagnetic resonance (EPR) of Gd3+ in both polycrystalline and single-crystal samples of dilute Pt: Gd alloys. The polycrystalline samples display a single resonance line whose thermal broadening is concentration dependent. Fully resolved fine structure appropriate to Gd3+ in a cubic environment is obtained from the single-crystal samples. From these results a value for b40 of +86 G is deduced, a value some three times larger than that found to date in any other cubic pure metals. It is shown conclusively that the experimental spectra from the single-crystal samples consist of the resolved single-ion fine-structure spectrum and an additional {"}cluster{"} line with the same g value as the single-ion spectrum. For most directions in the {110} plane excellent agreement is obtained between the single-ion spectra and those simulated using the Barnes-Plefka motional-narrowing theory. The existence and behavior of the {"}cluster{"} line is qualitatively explained in terms of a cross-relaxation process. Finally it is shown that the excitation energy E for the process 4f74f8 as involved in EPR is not the same as measured by optical experiments such as x-ray photoemission spectroscopy. A theory which describes this is capable of explaining the experimental exchange and crystal-field parameters.",
author = "M. Hardiman and J. Pellisson and Stewart Barnes and Bisson, {P. E.} and M. Peter",
year = "1980",
doi = "10.1103/PhysRevB.22.2175",
language = "English (US)",
volume = "22",
pages = "2175--2194",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Institute of Physics Publising LLC",
number = "5",

}

TY - JOUR

T1 - Electron paramagnetic resonance of Gd3+ in platinum

AU - Hardiman, M.

AU - Pellisson, J.

AU - Barnes, Stewart

AU - Bisson, P. E.

AU - Peter, M.

PY - 1980

Y1 - 1980

N2 - We have observed the electron paramagnetic resonance (EPR) of Gd3+ in both polycrystalline and single-crystal samples of dilute Pt: Gd alloys. The polycrystalline samples display a single resonance line whose thermal broadening is concentration dependent. Fully resolved fine structure appropriate to Gd3+ in a cubic environment is obtained from the single-crystal samples. From these results a value for b40 of +86 G is deduced, a value some three times larger than that found to date in any other cubic pure metals. It is shown conclusively that the experimental spectra from the single-crystal samples consist of the resolved single-ion fine-structure spectrum and an additional "cluster" line with the same g value as the single-ion spectrum. For most directions in the {110} plane excellent agreement is obtained between the single-ion spectra and those simulated using the Barnes-Plefka motional-narrowing theory. The existence and behavior of the "cluster" line is qualitatively explained in terms of a cross-relaxation process. Finally it is shown that the excitation energy E for the process 4f74f8 as involved in EPR is not the same as measured by optical experiments such as x-ray photoemission spectroscopy. A theory which describes this is capable of explaining the experimental exchange and crystal-field parameters.

AB - We have observed the electron paramagnetic resonance (EPR) of Gd3+ in both polycrystalline and single-crystal samples of dilute Pt: Gd alloys. The polycrystalline samples display a single resonance line whose thermal broadening is concentration dependent. Fully resolved fine structure appropriate to Gd3+ in a cubic environment is obtained from the single-crystal samples. From these results a value for b40 of +86 G is deduced, a value some three times larger than that found to date in any other cubic pure metals. It is shown conclusively that the experimental spectra from the single-crystal samples consist of the resolved single-ion fine-structure spectrum and an additional "cluster" line with the same g value as the single-ion spectrum. For most directions in the {110} plane excellent agreement is obtained between the single-ion spectra and those simulated using the Barnes-Plefka motional-narrowing theory. The existence and behavior of the "cluster" line is qualitatively explained in terms of a cross-relaxation process. Finally it is shown that the excitation energy E for the process 4f74f8 as involved in EPR is not the same as measured by optical experiments such as x-ray photoemission spectroscopy. A theory which describes this is capable of explaining the experimental exchange and crystal-field parameters.

UR - http://www.scopus.com/inward/record.url?scp=34848863658&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34848863658&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.22.2175

DO - 10.1103/PhysRevB.22.2175

M3 - Article

AN - SCOPUS:34848863658

VL - 22

SP - 2175

EP - 2194

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 5

ER -