Zobrazeno 1 - 10
of 152
pro vyhledávání: '"E. Maciążek"'
Autor:
Tadeusz Groń, Anna Gągor, A. Gudwański, B. Sawicki, Z. Stokłosa, Henryk Duda, E. Maciążek, Ewa Malicka
Publikováno v:
Physica B: Condensed Matter. 520:116-122
Chalcogenide spinels show a variety of physical properties and are very good candidates for electronic and high-frequency applications. We report the measurements of magnetic susceptibility, magnetic isotherm, electrical conductivity, thermoelectric
Autor:
Tadeusz Groń, M. Kubisztal, E. Maciążek, Ewa Pietrasik, Izabela Jendrzejewska, Andrzej Ślebarski, Marcin Fijałkowski, Henryk Duda
Publikováno v:
Journal of Magnetism and Magnetic Materials. 407:122-128
The crystal structure, magnetic isotherm, magnetic susceptibility, electrical conductivity and specific heat measurements for single-crystalline Zn x Dy y Cr z Se 4 (where x + y + z ≈3) spinels are presented. A semiconducting behavior with the acti
Autor:
E. Maciążek, Tadeusz Groń, Marcin Fijałkowski, Rafal Sitko, M. Kubisztal, Izabela Jendrzejewska, Andrzej Ślebarski, Małgorzata Karolus
Publikováno v:
Materials Chemistry and Physics. 168:187-192
The series of chromium selenides Gd-doped ZnCr2Se4 (from 0.07 Gd to 0.21 Gd) was synthesized in polycrystalline form using ceramic method from stoichiometric amounts of elements. The phase and structure determination by X-ray diffraction showed the m
Autor:
Marcin Fijałkowski, Izabela Jendrzejewska, Joachim Kusz, Tadeusz Groń, Andrzej Ślebarski, E. Maciążek, Michał Żelechower
Publikováno v:
Journal of Alloys and Compounds. 635:238-244
The single crystals of ZnCr2Se4 doped with tin ions having contents of 0.92, 1.01 and 1.26 located in the octahedral sites of the spinel structure were successfully synthesized. The ac and dc magnetic measurements, and as well as the specific heat st
Publikováno v:
Acta Physica Polonica A. 130:859-861
CuCr2Te4 crystallizes in the cubic spinel type structure (space group Fd-3m [1]), with lattice parameter a0 = 11.125 nm. It has a normal cation distribution with copper ions located at the tetrahedral sites and chromium ions in octahedral coordinatio
Publikováno v:
Journal of Crystal Growth. 401:697-701
The ZnCr 2 Se 4 :Dy-single crystals were prepared by chemical vapor transport in closed silica tubes using ZnSe and DySe with CrCl 3 as the transport agent. Three crystals with different Dy-content were studied by XRD and magnetic measurements in ord
Publikováno v:
Powder Diffraction. 28:S75-S85
Polycrystalline compounds in the Zn1-xNdxCr2Se4 system were prepared by solid state reaction using selenides (ZnSe, Cr2Se3) and pure elements (Nd, Se) as starting materials. The structural properties were determined by X-ray diffraction and the chemi
Publikováno v:
Solid State Phenomena. :181-184
The polycrystalline compounds in the ZnCr2-xNdxSe4 system were prepared by the ceramic method in closed silica tubes using ZnSe, Nd2Se3, and Cr2Se3 as starting materials. The chemical composition and structural data has been determined by X-ray diffr
Publikováno v:
Solid State Phenomena. :146-149
Phase and structure analysis of CuCr2-xGdxSe4 (x=0.1÷0.3) synthesized using a solid state reaction method were carried out using X-Ray powder diffraction. All obtained compounds were found to be multi phase with the spinel phase being dominant up to
Autor:
G. Władarz, Tadeusz Groń, E. Maciążek, Tadeusz Mydlarz, Józef Krok-Kowalski, Andrzej W. Pacyna
Publikováno v:
Solid State Phenomena. 170:9-12
A high spin (HS) – low spin (LS) transition has been discovered in the Co[Cr0.5Ga1.5]S4 spinel, where the Co ions occupy tetrahedral sites and the Cr and Ga ions octahedral ones. The latter are diluted by the non-magnetic Ga-ions. Application of ma