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^*

^*Corresponding author for this work

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
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 - 31 Mar 2006
Externally published	Yes
Event	Proceedings of the Tenth International Conference on Muon Spin Rotation, Relaxation and Resonance - Duration: 8 Aug 2005 → 12 Aug 2005

Keywords

Knight shift
Nuclear probes
Palladium
β-NMR

ASJC Scopus subject areas

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

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10.1016/j.physb.2005.11.121

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@article{7aefa451d27e48e0979e6be03a73bdc5,

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.\}",

year = "2006",

month = mar,

day = "31",

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

language = "English",

volume = "374-375",

pages = "419--422",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier BV",

note = "Proceedings of the Tenth International Conference on Muon Spin Rotation, Relaxation and Resonance ; Conference date: 08-08-2005 Through 12-08-2005",

}

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.

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 - https://www.scopus.com/pages/publications/33644668178

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

Keywords

ASJC Scopus subject areas

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