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Chapter and Conference Paper
From Superconductivity Towards Thermoelectricity: Ge-Based Skutterudites
We report on a substitution of Ge by Sb in \(\mathrm {LaPt_4Ge_{12}}\) , which significantly changes ground state properties, from a s...
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Chapter and Conference Paper
Changes of Thermoelectric Properties and Hardness After HPT Processing of Micro- and Nanostructured Skutterudites
In this paper the influence of the starting material on the physical properties after severe plastic deformation (SPD) will be discussed. A bulk p-type skutterudite DD0.44Fe2.1Co1.9Sb12(DD stands for didymium whi...
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Chapter
Non-centrosymmetric Superconductors: Strong vs. Weak Electronic Correlations
Superconductivity in materials without inversion symmetry displays intriguing properties due to a strong modification of their band structures caused by antisymmetric spin-orbit coupling. This is most dramatic...
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Chapter and Conference Paper
Skutterudites, a thermoelectric material investigated by high field Mössbauer spectroscopy
The partly filled skutterudites A x Fe4Sb12 (A = La, Pr, Nd, Eu, Yb, and the monovalent homologue Tl) were investigated at 4.2 K by 57Fe Mössbauer spectroscopy in external fields up to 1...
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Chapter and Conference Paper
Preparation of Single-Crystal Buckminster Fullerenes from Transport Reactions
Crystals of buckminsterfullerene were prepared from super-saturated solution in cyclohexane and by sublimation of powder. In both cases we obtained crystals with well expressed smooth and shiny faces. X-ray ch...
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Chapter and Conference Paper
On the Valency of Pr in (Y1−x Prx)Ba2Cu3O7
We present specific heat measurements of (Y,Pr)Ba2Cu3O7 in external fields up to 11 T. The results are analysed in terms of crystalline electric field (CF) effects and indicate that in these systems Pr appears to...
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Chapter
Effect of Cu/Zn Substitution upon Superconductivity in YBa2(Cu1-xZnx)3O7-δ and La1.85Sr0.15Cu1-xZnxO4-δ
The phenomenon of high-Tc superconductivity in the two families of ceramic Cu-oxides (LaBaCuO1, YBaCuO2) generated a wide spectrum of theoretical models which indicate that experimental data of these materials ar...
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Chapter
Transport and Spectroscopic Properties of Undoped and Zn-Doped Ceramic Superconductors
Structural, transport, and spectroscopic properties of the ceramic superconductor La 2-x Sr 2 ...