Valence fluctuation in CeMo2Si2C

Paramanik, U. B.; Anupam, A.; Burkhardt, Ulrich; Prasad, R.; Geibel, C.; Hossain, Zakir

doi:10.1016/j.jallcom.2013.05.169

Cited by 28 publications

(19 citation statements)

References 34 publications

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“…The local spin density approximation LSDA+U in around mean field scheme was used in order to involve additional correlations [13]. The value of Coulomb repulsion U in 4f cerium shell was set equal to 6 eV as it is typically assumed [14].…”

Section: Methodsmentioning

confidence: 99%

Electronic structure and transport properties of CeNi9In2

Kurleto

Starowicz

Goraus

et al. 2015

Solid State Communications

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We investigated CeNi 9 In 2 compound, which has been considered as a mixed valence (MV) system. Electrical resistivity vs. temperature variation was analysed in terms of the model proposed by Freimuth for systems with unstable 4f shell. At low temperature the resistivity dependence is consistent with a Fermi liquid state with a contribution characteristic of electron-phonon interaction. Ultraviolet photoemission spectroscopy (UPS) studies of the valence band did not reveal a Kondo peak down to 14 K. A difference of the spectra obtained with photon energies of low and high photoionization cross sections for Ce 4f electrons indicated that 4f states are located mainly close to the Fermi energy. The peaks related to f 5/2 1 and f 7/2 1 final states cannot be resolved but form a plateau between -0.3 eV and the Fermi energy. X-ray photoemission spectroscopy (XPS) studies were realized for the cerium 3d level. The analysis of XPS spectra within the Gunnarsson-Shönhammer theory yielded a hybridization parameter of 104 meV and non-integer f level occupation, being close to 3. Calculations of partial densities of states were realized by a full potential local orbital (FPLO) method. They confirm that the valence band is dominated by Ni 3d states and are in general agreement with the experiment except for the behavior of f-electrons.

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Section: Methodsmentioning

confidence: 99%

Electronic structure and transport properties of CeNi9In2

Kurleto

Starowicz

Goraus

et al. 2015

Solid State Communications

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“…The first term presents the electronic, the second the phonon contribution to the specific heat. We determined the values γ = 28 (2) Some examples are summarized in [35]. Before explaining this behavior, we make reference to the electrical resistivity measurements of CeRhSn (inset of Fig.…”

Section: Magnetic Measurementsmentioning

confidence: 99%

Cerium Valence Change in the Solid Solutions Ce(Rh_1-xRux)Sn

Niehaus

Abdala

Riecken

et al. 2013

Zeitschrift Für Naturforschung B

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The solid solutions Ce(Rh 1−x Ru x )Sn were investigated by means of susceptibility measurements, specific heat, electrical resistivity, X-ray absorption spectroscopy (XAS), and 119 Sn Mössbauer spectroscopy. Magnetic measurements as well as XAS data show a cerium valence change in dependence on the ruthenium content. Higher ruthenium content causes an increase from 3.22 to 3.45 at 300 K. Furthermore χ and χ −1 data indicate valence fluctuation for cerium as a function of temperature. For example, Ce(Rh 0.8 Ru 0.2 )Sn exhibits valence fluctuations between 3.42 and 3.32 in the temperature range of 10 to 300 K. This could be proven by using the interconfiguration fluctuation (ICF) model introduced by Sales and Wohlleben. Cerium valence change does not influence the tin atoms as proven by 119 Sn Mössbauer spectroscopy, but it influences the electrical properties. Ce(Rh 0.9 Ru 0.1 )Sn behaves like a typical valence fluctuating compound, and higher ruthenium content causes an increase of the metallic behavior.

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“…As expected for a mixed valent system no magnetic transition is observed. A Fermi-liquid behaviour is generally observed in the low temperature region of the ρ(T ) of the valence fluctuating Ce-based intermetallic compounds [26,33]. However in Ce 2 Re 3 Si 5 a T 3 behaviour of electrical resistivity is observed as shown in the inset of Fig.…”

Section: B Magnetic Properties Of Ce2re3si5mentioning

confidence: 90%

“…[100] and excitation energy has been observed in other Ce compounds [33][34][35], however the obtained value of T sf in Ce 2 Re 3 Si 5 are much higher.…”

Section: B Magnetic Properties Of Ce2re3si5mentioning

confidence: 99%

Valence fluctuation in Ce$_2$Re$_3$Si$_5$ and Ising-type magnetic ordering in Pr$_2$Re$_3$Si$_5$ single crystals

Sanki,

Sharma,

Sasmal

et al. 2021

Preprint

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Valence fluctuation in CeMo2Si2C

Cited by 28 publications

References 34 publications

Electronic structure and transport properties of CeNi9In2

Electronic structure and transport properties of CeNi9In2

Cerium Valence Change in the Solid Solutions Ce(Rh_1-xRux)Sn

Valence fluctuation in Ce$_2$Re$_3$Si$_5$ and Ising-type magnetic ordering in Pr$_2$Re$_3$Si$_5$ single crystals

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Valence fluctuation in CeMo2Si2C

Cited by 28 publications

References 34 publications

Electronic structure and transport properties of CeNi9In2

Electronic structure and transport properties of CeNi9In2

Cerium Valence Change in the Solid Solutions Ce(Rh1-xRux)Sn

Valence fluctuation in Ce$_2$Re$_3$Si$_5$ and Ising-type magnetic ordering in Pr$_2$Re$_3$Si$_5$ single crystals

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Product

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Cerium Valence Change in the Solid Solutions Ce(Rh_1-xRux)Sn