Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Bartłomiej Andrzejewski"'
Autor:
Leszek S. Litzbarski, Marek Olesz, Stanisław Wojtas, Michał J. Winiarski, Tomasz Klimczuk, Hubert Głowiński, Bartłomiej Andrzejewski
Publikováno v:
IEEE Access. 10:129313-129321
Publikováno v:
Ceramics International. 45:1189-1195
Recently conical magnetic order induced by Sc3+ doping has been reported in ferrimagnetic M-type hexagonal ferrite single- and polycrystals resulting in multiferroic properties of spin origin in bulk material. We were interested in Sc-induced modific
Autor:
Ewa Markiewicz, Andrzej Hilczer, Adam Pietraszko, Bartłomiej Andrzejewski, Katarzyna Pasińska
Publikováno v:
Ferroelectrics. 534:129-138
Agglomerated single-phase Sr0.95Nd0.05Fe12-xAlxO19 nanocrystallites with 0.36 ≤ x ≤ 1.08 were synthesized hydrothermally and their properties were studied. Ferrimagnetic hysteresis loops were obser...
Autor:
Waldemar Bednarski, Monika Michalska, Jacek B. Jasinski, A. Ostrowski, Dominika A. Ziolkowska, Paweł Ławniczak, Jeng-Yu Lin, She-Huang Wu, Bartłomiej Andrzejewski, Po-Han Lee
Publikováno v:
Electrochimica Acta. 276:37-46
Lithium manganese oxide nanopowders doped with Ce ions are synthesized using modified sol-gel method and the effect of annealing atmosphere (air vs. nitrogen) on the structure, morphology, and phase composition is studied thoroughly. Electrochemical
Autor:
M. Matczak, Katarzyna Chybczyńska, B. Hilczer, T. Lucinski, M. Błaszyk, Bartłomiej Andrzejewski
Publikováno v:
Materials Research Bulletin. 86:178-185
Single-phase BiFeO3 powder consisting of ball-like aggregates resembling nanoflowers with petals, the thickness of which can be controlled by polyethylene glycol addition, was synthesized by microwave hydrothermal method. The powder was characterized
Autor:
Dennis E. Brown, Kamal Chapagain, Ewa Markiewicz, J. Pietosa, Omar Chmaissem, Stephan Rosenkranz, Changyong Park, Bogdan Dabrowski, Chuanlong Lin, Bianca Haberl, Curtis Kenney-Benson, Stanislaw Kolesnik, Saul H. Lapidus, Bartłomiej Andrzejewski, Jamie J. Molaison, Jeffrey W. Lynn
Publikováno v:
Physical Review Materials. 3
Responding to the rapidly increasing demand for efficient energy usage and increased speed and functionality of electronic and spintronic devices, multiferroic oxides have recently emerged as key materials capable of tackling this multifaceted challe
XRD, Raman and magnetic studies of Bi1−xLaxFeO3 solid solution obtained by mechanochemical synthesis
Autor:
Adam Pietraszko, B. Hilczer, Izabela Szafraniak-Wiza, Bartłomiej Andrzejewski, Maria Połomska
Publikováno v:
Phase Transitions. 90:24-33
Bi1 − xLaxFeO3 single-phase solid solution with 0 ≤ x ≤ 0.3 was obtained by mechanochemical synthesis and characterized by X-ray diffraction, FT NIR Raman spectroscopy and magnetic studies. The nanocrystalline powders of rhombohedrally distorte
Publikováno v:
Journal of Alloys and Compounds. 671:493-501
BiFeO 3 powder which formed ball-like structures resembling flowers was obtained by microwave hydrothermal synthesis. The flowers were of a dozen or so μm in diameter and the thickness of the crystallites forming petals could be controlled. The mate
Autor:
Ewa Markiewicz, Andrzej Hilczer, Katarzyna Kowalska, Bartłomiej Andrzejewski, Adam Pietraszko
Publikováno v:
Materials Science and Engineering: B. 207:47-55
Nanocomposites of hard magnetic SrFe12O19 hexaferrite and soft magnetic CoFe2O4 spinel with exchange spring interaction were obtained by simple solid state reaction during 8 h and 14 h at 1050 °C. The structure and morphology of the composites was c
Autor:
Lidia Najder-Kozdrowska, M.A. Augustyniak-Jabłokow, Krzysztof Tadyszak, Bartłomiej Andrzejewski, Roman Strzelczyk, Andrzej B. Więckowski
Publikováno v:
Carbon. 94:53-59
Anthracite, with carbon content of 93.5 wt% and 2.7 wt% of hydrogen, was studied by electron paramagnetic resonance (EPR), electrical conductivity and static magnetic susceptibility measurements, in the temperature range of 2–300 K. The EPR measure