Effect of Pressure on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>f</mml:mi></mml:math>Number and Isomer Shift for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow><mml:mrow><mml:mn>57</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>in Cu, V, and Ti

Moyzis, J.; DePasquali, G.; Drickamer, H. G.

doi:10.1103/physrev.172.665

Cited by 20 publications

(8 citation statements)

References 24 publications

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“…Furthermore the work of Nandwani and Puri [6] concerning the influence of pressure on the f-factor for Fe6' as an impurity in a number of metallic hosts is also discussed. [7]. This supports the usability of the Debye model for Mossbauer spectroscopic work.…”

Section: Introductionsupporting

confidence: 68%

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On the Usability of Debye Theory in Mössbauer Spectroscopic Studies

Mahesh

1974

Physica Status Solidi (b)

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The usability of the Debye theory of vibrational frequency spectra of solids for evaluating the Mossbauer recoilless fraction is discussed. Mossbauer effect in solid krypton is particularly considered for this purpose. The study of the effect of pressure on recoilless fraction of the Fe67 impurity in vanadium supports the Debye model. Further improvement is outlined using the concept of centro-frequency of the vibrational spectra.Es wird die Brauchbarkeit der Debye-Theorie der Schwingungsspektren von Festkorpern fur die Berechnung des riickstoBfreien MoDbaueranteils diskutiert. Insbesondere wird der MoBbauereffekt in festem Krypton zu diesem Zweck untersucht. Die Untersuchung des Druckeinflusses auf den ruckstoBfreien Anteil der Fe5'-Storstellen in Vanadium bestatigt das Debye-Modell. Weitere Verbesserung wird durch Benutzung des Konzepts der Zentrofrequenz der Schwingungsspektren erwartet.

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Section: Introductionsupporting

confidence: 68%

“…Corresponding to ( A f / f A P ) = 7.8 x (kbar)-l, obtained experimentally by Moyzis [7], Oeff (in place of OJ, using (lo), is found t o be about 265K. This value of Oeff, when substituted in (13), gives (,YIP) = 1.88.…”

Section: (14)mentioning

confidence: 80%

On the Usability of Debye Theory in Mössbauer Spectroscopic Studies

Mahesh

1974

Physica Status Solidi (b)

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“…This in turn will influence the Mossbauer fraction f and its temperature [l] and pressure [ 2 ] dependence. Such measurements o f f , may yield rather unique information of t h e impurity-to-host binding relative t o the host-to-host binding in the sense that one studies directly the vibrations of impurity atoms themselves without recourse to the bulk properties.…”

Section: Introductionmentioning

confidence: 99%

“…I n particular, if the Mossbauer atom of atomic mass M acts as an impurity in a lattice composed of atoms with the atomic masses M , then the change in mass a t the defect site and the change in the coupling constant for the impurity-host atoms will influence the mean square displacement ( x 2 ) of the impurity atom. This in turn will influence the Mossbauer fraction f and its temperature [l] and pressure [ 2 ] dependence. Such measurements o f f , may yield rather unique information of t h e impurity-to-host binding relative t o the host-to-host binding in the sense that one studies directly the vibrations of impurity atoms themselves without recourse to the bulk properties.…”

Section: Introductionmentioning

confidence: 99%

Pressure Variation of Mössbauer Fraction for an Impurity Atom

Nandwani

Puri

1970

Physica Status Solidi (b)

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The variation of "Mossbauer fraction" ,/,with pressure of Fe5' embedded as a dilute in]-purity in Ti, V, Ni, Cu, Mo, Pd, W, and Pt host lattices has been calculated by incorporating bothithe force constant change and the mass change a t the site of the impurity. Comparison of the calculations with available experimental values of the slope gives definite evidence for the change of the force constant q'/q. The value of q'/q thus obtained is in agreement with that obtained from the variation o f f with temperature for Fe in Cu, but not for Fe in V.Die Andernng von ,,Mossbauer fraction",f, mit dem Druck wurde durch Einbeziehung sowohl von Anderungen der Kraftkonstante als auch von Massenanderungen am Defektplatz fur FeS7, das als verdunnte Verunreinigung in Ti-, V-, Ni-, Cu-, Mo-Pd-, W-und PtWirtsgittern eingebaut war, berechnet. Ein Vergleich der Rechnungen mit erhaltlichen experimentellen Werten ergibt einen definitiven Beweis fur die A n F u n g der Kraftkonstante q'/q. Der so erhaltene Wert von q'/q befindet sich mit dem in obereinstimmung, der a m der Temperaturiinderung von f fur Fe in Cu, nicht aber fur Fe in V erhalten wurde.

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“…The influence of pressure on f , for the 14.4 keV transition of Fe5? a s an impurity in vanadium, has been experimentaliy studied a t room temperature recently by Moyzis, Jr. et al (4). In the present work we have determined this pressure dependence of f by using the experimental phonon frequency spectra (pfs) of vanadium host, obtained by Mozer (5), and show that our calculations for (f other hand, the Debye model, with its characteristic temperature derived from the f ) a r e compared well with the experiment.…”

mentioning

confidence: 99%

Effect of Pressure on the Recoilless Fraction of Fe57 in Vanadium

Mahesh

1975

Physica Status Solidi (b)

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Effect of Pressure onfNumber and Isomer Shift forFe57in Cu, V, and Ti

Cited by 20 publications

References 24 publications

On the Usability of Debye Theory in Mössbauer Spectroscopic Studies

On the Usability of Debye Theory in Mössbauer Spectroscopic Studies

Pressure Variation of Mössbauer Fraction for an Impurity Atom

Effect of Pressure on the Recoilless Fraction of Fe57 in Vanadium

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