On the Usability of Debye Theory in Mössbauer Spectroscopic Studies

Abstract

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.

Crystal structure, magnetic properties, and Mössbauer spectroscopy of new layered iron oxyselenide Nd2Fe2O3Se2

“…The Debye temperature for Fe 2+ is estimated from the recoil-free fraction. The recoil-free fraction is represented by the following equation [25],…”

Magnetic properties of ordered perovskites Ba2LnTaO6(Ln = Y, lanthanides)

“…The area of the intensity is proportional to the recoil-free fraction f . The recoil-free fraction is represented by the following equation [21]:…”

Temperature-dependent iron motion in extremophile rubredoxins – no need for ‘corresponding states’

“…In Fig. 3 C, the NRVS-derived < u 2 > for Pf Rd is compared with theoretical curves for Debye models 57 with a variety of temperatures. There is good agreement with a Debye temperature of ~ 175 K. Previous work by Debrunner and coworkers put the Rd Debye temperature between 145 and 212 K 58 .…”