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Optical study of orbital excitations in transition-metal oxides
The orbital excitations of a series of transition-metal compounds are studied by means of optical spectroscopy. Our aim was to identify signatures of collective orbital excitations by comparison withExpand
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Linear temperature dependence of the magnetic heat conductivity in CaCu2O3.
We present experimental results for the thermal conductivity kappa of the pseudo-two-leg ladder material CaCu2O3. The strong buckling of the ladder rungs renders this material a good approximation toExpand
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High Temperature Superconductor Bulk Materials
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A novel heat engine for magnetizing superconductors
The potential of bulk melt-processed YBCO single domains to trap significant magnetic fields (Tomita and Murakami 2003 Nature 421 517–20; Fuchs et al 2000 Appl. Phys. Lett. 76 2107–9) at cryogenicExpand
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Copper NMR and NQR in YBa2Cu3Ox and GdBa2Cu3Ox withx between 6 and 7. A study of the oxygen ordering
The NQR and NMR spectra of copper in polycrystalline samples of YBa2Cu3Ox and GdBa2Cu3Ox with different oxygen concentrationx have been measured at 4.2 and 1.2 K. The different influence of Gd spinsExpand
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Modified melt texturing process for YBCO based on the polythermic section YO1.5“Ba0.4Cu0.6O” in the YBaCuO phase diagram at 0.21 bar oxygen pressure
Abstract Y 2 O 3 admixed to 123 significantly influences the mechanism of melt texturing of YBCO. Based on phase diagram considerations, it is shown that the process window for stable growthExpand
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High Magnetic Fields in Superconducting Permanent Magnets
We report on the temperature dependence of the maximum trapped field Bo(T) in the high-Tc superconductor YBa2Cu3O7−x (YBCO). Trapped fields of bulk melt-textured YBCO samples are limited by theirExpand
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Cu-O network-dependent core-hole screening in low-dimensional cuprate systems: a high-resolution X-ray photoemission study
We present an experimental study of the dynamics of holes in the valence bands of zero-, one-, and two-dimensional undoped model cuprates, as expressed via the screening of a Cu 2p core hole. TheExpand
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Antiparallel ruthenium coupling in doped La1.2Sr1.8Mn2−xRuxO7
X-ray magnetic circular dichroism measurements in the hard and soft x-ray region have been performed at Mn K and L2,3 edges of the ruthenium (with x=0.05, 0.1 and 0.5) doped Ruddlesden–Popper-phaseExpand
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Estimation of the Chemical Transport Behaviour of Transition Metal Silicides MeSix (Me = Cr, Ti, V, Mo, Fe, Mn) with X2 (X = Cl, Br, I)
Chemical vapour transport of transition metal silicides of Cr, Ti, V, Mo, Fe and Mn with halogen was estimated by a simple thermodynamic approach. The content of Si and Me in the gas phase isExpand
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