β-NMR of Palladium foil

T. J. Parolin; Z. Salman; J. Chakhalian; D. Wang; T. A. Keeler; Md Hossain; R. F. Kiefl; K. H. Chow; G. D. Morris; R. I. Miller; W. A. MacFarlane

doi:10.1016/j.physb.2005.11.121

β-NMR of Palladium foil

T. J. Parolin, Z. Salman, J. Chakhalian, D. Wang, T. A. Keeler, Md Hossain, R. F. Kiefl, K. H. Chow, G. D. Morris, R. I. Miller, W. A. MacFarlane

School of Arts and Sciences, Physics & Astronomy

Research output: Contribution to journal › Conference article › peer-review

4 Scopus citations

Abstract

Beta-detected NMR (β-nmr) of low-energy implanted ⁸Li ⁺ was studied in metallic palladium. The resonance was found to have a large negative shift with respect to the reference signal in the cubic insulator MgO. This shift exhibited significant temperature dependence on cooling below room temperature, approximately proportionate to the temperature-dependent spin susceptibility of pure Pd. Thus it is tentatively attributed to a Knight shift (K) caused by a large negative hyperfine coupling; a phenomenon common in transition metal ions, but not in alkalis. However, the spin-lattice relaxation of ⁸Li is much slower than expected from the Korringa law for such a large K. We compare results from samples of very different thicknesses: 12.5μm foil and a 100 nm thin film.

Original language	English (US)
Pages (from-to)	419-422
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	374-375
DOIs	https://doi.org/10.1016/j.physb.2005.11.121
State	Published - Mar 31 2006
Event	Proceedings of the Tenth International Conference on Muon Spin Rotation, Relaxation and Resonance - Duration: Aug 8 2005 → Aug 12 2005

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Keywords

Knight shift
Nuclear probes
Palladium
β-NMR

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10.1016/j.physb.2005.11.121

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@article{1454d16fce3f4333b9282f65999b1113,

title = "β-NMR of Palladium foil",

abstract = "Beta-detected NMR (β-nmr) of low-energy implanted 8Li + was studied in metallic palladium. The resonance was found to have a large negative shift with respect to the reference signal in the cubic insulator MgO. This shift exhibited significant temperature dependence on cooling below room temperature, approximately proportionate to the temperature-dependent spin susceptibility of pure Pd. Thus it is tentatively attributed to a Knight shift (K) caused by a large negative hyperfine coupling; a phenomenon common in transition metal ions, but not in alkalis. However, the spin-lattice relaxation of 8Li is much slower than expected from the Korringa law for such a large K. We compare results from samples of very different thicknesses: 12.5μm foil and a 100 nm thin film.",

keywords = "Knight shift, Nuclear probes, Palladium, β-NMR",

author = "Parolin, {T. J.} and Z. Salman and J. Chakhalian and D. Wang and Keeler, {T. A.} and Md Hossain and Kiefl, {R. F.} and Chow, {K. H.} and Morris, {G. D.} and Miller, {R. I.} and MacFarlane, {W. A.}",

note = "Funding Information: We thank the NSERC for financial support. We gratefully acknowledge the assistance of H.-U. Habermeier (MPI), Rahim Abasalti and the TRIUMF staff.; Proceedings of the Tenth International Conference on Muon Spin Rotation, Relaxation and Resonance ; Conference date: 08-08-2005 Through 12-08-2005",

year = "2006",

month = mar,

day = "31",

doi = "10.1016/j.physb.2005.11.121",

language = "English (US)",

volume = "374-375",

pages = "419--422",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

}

TY - JOUR

T1 - β-NMR of Palladium foil

AU - Parolin, T. J.

AU - Salman, Z.

AU - Chakhalian, J.

AU - Wang, D.

AU - Keeler, T. A.

AU - Hossain, Md

AU - Kiefl, R. F.

AU - Chow, K. H.

AU - Morris, G. D.

AU - Miller, R. I.

AU - MacFarlane, W. A.

N1 - Funding Information: We thank the NSERC for financial support. We gratefully acknowledge the assistance of H.-U. Habermeier (MPI), Rahim Abasalti and the TRIUMF staff.

PY - 2006/3/31

Y1 - 2006/3/31

N2 - Beta-detected NMR (β-nmr) of low-energy implanted 8Li + was studied in metallic palladium. The resonance was found to have a large negative shift with respect to the reference signal in the cubic insulator MgO. This shift exhibited significant temperature dependence on cooling below room temperature, approximately proportionate to the temperature-dependent spin susceptibility of pure Pd. Thus it is tentatively attributed to a Knight shift (K) caused by a large negative hyperfine coupling; a phenomenon common in transition metal ions, but not in alkalis. However, the spin-lattice relaxation of 8Li is much slower than expected from the Korringa law for such a large K. We compare results from samples of very different thicknesses: 12.5μm foil and a 100 nm thin film.

AB - Beta-detected NMR (β-nmr) of low-energy implanted 8Li + was studied in metallic palladium. The resonance was found to have a large negative shift with respect to the reference signal in the cubic insulator MgO. This shift exhibited significant temperature dependence on cooling below room temperature, approximately proportionate to the temperature-dependent spin susceptibility of pure Pd. Thus it is tentatively attributed to a Knight shift (K) caused by a large negative hyperfine coupling; a phenomenon common in transition metal ions, but not in alkalis. However, the spin-lattice relaxation of 8Li is much slower than expected from the Korringa law for such a large K. We compare results from samples of very different thicknesses: 12.5μm foil and a 100 nm thin film.

KW - Knight shift

KW - Nuclear probes

KW - Palladium

KW - β-NMR

UR - http://www.scopus.com/inward/record.url?scp=33644668178&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33644668178&partnerID=8YFLogxK

U2 - 10.1016/j.physb.2005.11.121

DO - 10.1016/j.physb.2005.11.121

M3 - Conference article

AN - SCOPUS:33644668178

SN - 0921-4526

VL - 374-375

SP - 419

EP - 422

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - Proceedings of the Tenth International Conference on Muon Spin Rotation, Relaxation and Resonance

Y2 - 8 August 2005 through 12 August 2005

ER -

β-NMR of Palladium foil

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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