Vacancy migration and accretion in Ni observed by perturbed<i>γ</i>-<i>γ</i>angular correlations

Allard, Carl; Collins, Gary S.; Hohenemser, C.

doi:10.1103/physrevb.32.4839

Cited by 36 publications

(4 citation statements)

References 34 publications

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“…The same argument was presented in an earlier publication on the basis of similar estimates. 10 In most spectra, the oscillation does not vanish completely from the spectrum, but 15 nonharmonic frequencies having comparable amplitudes deliver contributions to a weak oscillation pattern with no obvious periodicity. At the end we are confronted with the objection that a large number of frequencies which manifest various vacancy-associated sites is not likely to produce reasonable TDPAC spectra to identify specific configurations.…”

Section: Resultsmentioning

confidence: 99%

“…4,8,10 Implicitly the model relies on an attractive interaction which drives the preferential formation of the complexes. The longer bond length in the C-site configuration when compared to the regular lattice site was estimated to be responsible for the reduced field strength.…”

Section: Shell Numbermentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11] In previous publications, special attention was paid to the so-called "Csite," which develops in fcc metals during the annealing stage III. As no quadrupolar interaction was detected in these investigations, the C-site configuration was associated with a cubic environment.…”

Section: Introductionmentioning

confidence: 99%

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Magnetism of isolated cadmium atoms in vacancy-associated sites in nickel

Zeitz

Dogra

Byrne³

et al. 2008

Phys. Rev. B

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The magnetic hyperfine fields of Cd guest atoms in nickel have been measured by perturbed angular correlation spectroscopy with an unprecedented precision. The experiments exhibit the well-known oscillations which have been attributed to the substitutional and the cubic C-site of Cd in nickel, but also show the existence of previously unknown sites through the observation of combined interactions between magnetic hyperfine fields and electric field gradients. The contributions of a large number of possible sites in connection with the properties of the combined interactions are proposed to be responsible for the invisibility of sites as well as for the large amplitudes of some measured frequencies. Following the systematic of magnetic fields of vacancy-associated 5sp-elements in nickel, the measured fields are consistent with theoretical expectations which use the number of vacancies as the primary parameter.

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Section: Resultsmentioning

confidence: 99%

Section: Shell Numbermentioning

confidence: 99%

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Magnetism of isolated cadmium atoms in vacancy-associated sites in nickel

Zeitz

Dogra

Byrne³

et al. 2008

Phys. Rev. B

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“…Defect trapping at indium atoms implanted in nickel has been studied extensively by means of perturbed angular correlations (PAC) on "'Cd [ 1,2], Mossbauer spectroscopy (MS) on 'I9Sn [3], and channelling measurements [4,5]. From these measurements the following picture of defect association in the system InNi has emerged.…”

Section: Introductionmentioning

confidence: 99%

Observation of a cubic defect in nickel by means of nuclear magnetic resonance on oriented¹¹⁴In nuclei

Metz

Niesen

1990

J. Phys.: Condens. Matter

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114mIn was implanted at room temperature into nickel single crystals, and nuclear magnetic resonance was detected by observing the destruction of beta -asymmetry in the decay of 114In. After annealing at 400 K, at which temperature indium atoms are known to trap defects of vacancy-type, two single resonance lines were observed, corresponding to hyperfine fields of -3.30(1) T for the substitutional indium atoms, and +5.12(2) T for the defect associated indium atoms. The experiments were carried out with an external magnetic field along the (100), (110) and (111) crystallographic axis, respectively. No significant shift or splitting of the defect associated resonance line was detected. This implies that the defect causes an electric field gradient of at most 1017 V cm-2. It is argued that the defect is a cubic vacancy cluster as observed on the system (111In to 111Cd)Ni with perturbed angular correlations and Mossbauer spectroscopy on (119In to 119Sn)Ni.

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A Study of the Vacancy–Impurity Interaction in Dilute Nickel Alloys by Core Electron Annihilation

Арбузов

Danilov

Druzhkov

1997

phys. stat. sol. (a)

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Vacancy migration and accretion in Ni observed by perturbedγ-γangular correlations

Cited by 36 publications

References 34 publications

Magnetism of isolated cadmium atoms in vacancy-associated sites in nickel

Magnetism of isolated cadmium atoms in vacancy-associated sites in nickel

Observation of a cubic defect in nickel by means of nuclear magnetic resonance on oriented¹¹⁴In nuclei

A Study of the Vacancy–Impurity Interaction in Dilute Nickel Alloys by Core Electron Annihilation

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Vacancy migration and accretion in Ni observed by perturbedγ-γangular correlations

Cited by 36 publications

References 34 publications

Magnetism of isolated cadmium atoms in vacancy-associated sites in nickel

Magnetism of isolated cadmium atoms in vacancy-associated sites in nickel

Observation of a cubic defect in nickel by means of nuclear magnetic resonance on oriented114In nuclei

A Study of the Vacancy–Impurity Interaction in Dilute Nickel Alloys by Core Electron Annihilation

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Product

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Observation of a cubic defect in nickel by means of nuclear magnetic resonance on oriented¹¹⁴In nuclei