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作者:M. Pękała , K. Pękała ...
来源:[J].Journal of Magnetism and Magnetic Materials(IF 1.826), 2018
摘要:Abstract(#br)The Griffiths phase in fine grain manganite La 0.75 Ca 0.25 MnO 3 is studied by the complementary structural methods, DC magnetic susceptibility and ESR spectroscopy. The Griffiths like phase is detected above Curie temperature between 232 and 280 K and sustains...
作者:... D. Oleszak , M. Pękała , M. Kowalczyk
来源:[J].Journal of Magnetism and Magnetic Materials(IF 1.826), 2017, Vol.434, pp.126-134
摘要:Abstract(#br)The influence of Co content on the structural and hard magnetic properties of two sets of nanocrystalline Fe 52−x Co x Pt 28 B 20 (x = 0–26) and Fe 60−y Co y Pt 25 B 15 (y = 0–40) alloys was studied. The alloys were prepared as ribbons by the rapid quenchin...
作者:M. Pękała , R. Szymczak ...
来源:[J].Journal of Magnetism and Magnetic Materials(IF 1.826), 2017, Vol.430, pp.16-21
摘要:Abstract(#br)The magnetocaloric effect in the vicinity of the martensitic transformation for a single crystalline alloy with a composition close to the stoichiometric Ni 2 MnGa has been determined indirectly by M ( T,H ) magnetization measurements. It has an inverse character. Th...
作者:M. Pękała , J. Szydłowska ...
来源:[J].Journal of Alloys and Compounds(IF 2.39), 2016, Vol.685, pp.237-241
摘要:Abstract(#br)The Griffiths like phase embedded into paramagnetic matrix of mixed valence orthorhombic nanocrystalline manganite La 0.50 Ca 0.50 MnO 3 is experimentally studied by means of sensitive magnetic susceptibility and electron spin resonance. A comparative study of the na...
作者:M. Pękała , K. Pękała ...
来源:[J].Journal of Alloys and Compounds(IF 2.39), 2015, Vol.629, pp.98-104
摘要:Abstract(#br)Poly- and nanocrystalline manganite composites (1/3)La 0.7 Ca 0.3 MnO 3 /(2/3)La 0.8 Sr 0.2 MnO 3 prepared by the sol–gel method are studied by magnetic and transport measurements. The Arrott plots and universal curve of magnetic entropy change confirm that magn...
作者:M. Pękała , J.-F. Fagnard
来源:[J].Physica B: Physics of Condensed Matter(IF 1.327), 2016, Vol.482, pp.8-13
摘要:Abstract(#br)The critical properties of monovalent doped manganite Pr 0.55 K 0.05 Sr 0.4 MnO 3 around the paramagnetic to ferromagnetic phase transition were investigated through various methods: the modified Arrott plots (MAP), the Kouvel–Fisher method and the critical isot...
作者:M. Pękała , V. Drozd
来源:[J].Journal of Non-Crystalline Solids(IF 1.597), 2008, Vol.354 (47), pp.5308-5314
摘要:Abstract(#br)The sol–gel method is applied to prepare the polycrystalline La 0.8 Sr 0.2 MnO 3 manganite and to reduce grain sizes of nanocrystalline sample down to 23 nm. The magnetocaloric effect was determined from isothermal magnetization measurements. Transition from the...
作者:M. Pękała , H. Bougrine ...
来源:[J].Physica C: Superconductivity and its applications(IF 0.718), 1998, Vol.303 (3-4), pp.169-176
摘要:Abstract(#br)The electrical resistivity in the mixed state of Bi2212 tape superconductors can be accurately reconstructed for values below approximately a half of the normal state value of resistivity, assuming a Gaussian distribution for the vortex lattice melting temperatures. ...
作者:M. Pękała , F. Wolff-Fabris ...
来源:[J].Journal of Magnetism and Magnetic Materials(IF 1.826), 2013, Vol.335, pp.46-52
摘要:Abstract(#br)An orthorhombic DyMnO 3 single crystal has been studied in magnetic fields up to 14 T and between 3 K and room temperature. The field dependent ordering temperature of Dy moments is deduced. The paramagnetic Curie Weiss behavior is related mainly to the Dy 3+ sublatt...
作者:M. Pękała , M. Jachimowicz ...
来源:[J].Journal of Non-Crystalline Solids(IF 1.597), 2001, Vol.287 (1), pp.360-365
摘要:Abstract(#br)X-ray diffraction analysis, differential scanning calorimetry and magnetization measurements were used to determine the structural changes of the Co 78 B 11 Si 11 alloys prepared by a ball milling of amorphous, crystallized ribbons and a mixture of elemental cry...

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