„Ostałówek. Miejsce wspólne” – projekt animacyjny inspirowany doświadczeniami etnograficznymi

„Ostałówek. A common place” – an animation project inspired by ethnographic experiences The article is an overview of activities undertaken by means of cultural animation, based on previous deepened ethnographic research. It refers to the matter of using anthropology as an instrument to stimulate societies endangered with exclusion. Th e project „Ostałówek. A common place”, carried out in one of the villages in Radomszczyzna (near Szydłowiec), was introduced as an example

Magnetic properties of manganese doped PrAlO3 monocrystalline fibres

Monocrystalline fibres of undoped PrAlO3 and PrAlO3:0.1 Mn, have been grown by the pulling-down method under nitrogen atmosphere. The as-grown crystal doped with Mn had a visible brown core surrounded by a green ring, whereas this effect was weaker for the undoped PrAlO3. A coloration of the brown core was caused by a presence of Pr4+ ions. The presence of the Pr4+ ions was confirmed by XPS and magnetic studies. The XPS chemical analysis showed the increased concentration of oxygen in the crystals with the brown core. The most probable valency of manganese is Mn4+. It is located in Al3+ sites

A Deeper Insight into (Lu,Y)AG:Pr Scintillator Crystals

Interior of Czochralski-grown (Lu,Y)AG:Pr crystals has been examined by means of several techniques, such as X-Ray Photoelectron Spectroscopy, X-Ray Diffraction, Time-of-Flight Secondary Ion Mass Spectrometry, and magnetic susceptibility measurements. Additionally, their luminescence has been monitored at various combinations of a double-beam (X-ray/IR) excitation

A deeper insight into (Lu,Y)AG : Pr scintillator crystals

Interior of Czochralski-grown (Lu,Y)AG:Pr crystals has been examined by means of several techniques, such as X-Ray Photoelectron Spectroscopy, X-Ray Diffraction, Time-of-Flight Secondary Ion Mass Spectrometry, and magnetic susceptibility measurements. Additionally, their luminescence has been monitored at various combinations of a double-beam (X-ray/IR) excitation

The investigation of YAlO3-NdAlO3 system, synthesis and characterization

The binary phase diagram of the YAlO3 (YAP) - NdAlO3 (NAP) system was determined by differential thermal analysis (DTA) and X-ray powder diffraction (XRD) measurements. High purity nanocrystalline powders and small single crystals of Y_{1-x}Nd_{x}AlO_3 (0 \leq x \leq 1) have been produced successfully by modified sol-gel (Pechini) and micro-pulling-down methods, respectively. Both end members show high mutual solubility >25% in the solid phase, with a miscibility gap for intermediate compositions. A solid solution with x \approx 0.2 melts azeotropic ca. 20 degrees below pure YAP. Such crystals can be grown from the melt without segregation. The narrow solid/liquid region near the azeotrope point could be measured with a "cycling" DTA measurement technique.Comment: 12 pages, 8 figures, submitted to J. Alloys. Comp

Synchrotron Topographic Studies of Growth Defeects in the Core of a SrLaGaO4SrLaGaO_4 Single Crystal

Samples cut out from different regions of $SrLaGaO_4$ (SLG) single crystal grown along [001]-direction were studied with a number of X-ray diffraction topographic methods exploring both conventional and synchrotron X-ray sources. The synchrotron investigation included in particular white beam projection transmission topography at ultra short wavelength and taking monochromatic beam topographs at different points of the rocking curves at different azimuths. The methods enabled the evaluation of the character of lattice deformation connected with the characteristic ‘rod-like’ defects observed in the core region of the crystal. A shrinkage of the material inside the defects was indicated

Electron Spin Resonance Spectra of Fe3+\text{}^{3+} Ions in SrLaAlO4\text{}_{4} and SrLaGaO4\text{}_{4} High-Tc\text{}_{c} Substrates

New results concerning paramagnetic defects in SrLaAlO$\text{}_{4}$ and SrLaGaO$\text{}_{4}$ high-T$\text{}_{c}$ substrates connected with unavoidable impurity Fe$\text{}^{3+}$ are reported. The identification was checked by measuring the spectra in SrLaAlO$\text{}_{4}$ crystals intentionally doped with 0.5 at.% Fe. Angular dependences of three lines were distinguished at X-band frequency in the temperature range from 4 K to 300 K. We attribute these lines to the transitions inside the doublets ±1/2, and "forbidden" doublets ±3/2, ±5/2, respectively. By diagonalization of spin-Hamiltonian, parameters |D| > 1.2 cm$\text{}^{-1}$, |E| ≈ 0.1 cm$\text{}^{-1}$ and g$\text{}_{x}$=g$\text{}_{y}$=g$\text{}_{z}$= 1.987(13) for SrLaAlO$\text{}_{4}$ and SrLaGaO$\text{}_{4}$ were calculated and within the margin of error they were of the same value

Study of SrLaAlO4\text{}_{4} and SrLaGaO4\text{}_{4} Substrate Crystals by Raman Spectroscopy

In this paper the study of SrLaAlO$\text{}_{4}$ and SrLaGaO$\text{}_{4}$ single crystals using the Raman scattering method is presented. The obtained results are discussed in terms of nature of the crystallografic imperfections and point defects which might arise during the crystal growth process