Zobrazeno 1 - 10
of 86
pro vyhledávání: '"H.R. Bertorello"'
Publikováno v:
Modern Instrumentation. :41-48
Pulsed Laser Deposition (PLD) is a powerful technique to grow thin films. Oxides, Magnetics and superconducting materials have been obtained by PLD and theirs properties are strongly dependent of deposition parameters. The construction of a simple an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81cb9f6b60e20bc647d966d9d1db0b9a
https://doi.org/10.4236/mi.2012.14006
https://doi.org/10.4236/mi.2012.14006
Autor:
H.R. Bertorello, Paula G. Bercoff
Publikováno v:
Applied Physics A. 100:1019-1027
The magnetic properties of hematite powders produced by a solid state nucleation-and-growth process are studied as a function of temperature T and applied field H. Independently of the temperature, there exists a soft magnetic contribution that is as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ad4a3d88a1884f5581a99f3bed5d903
https://doi.org/10.1007/s00339-010-5983-7
https://doi.org/10.1007/s00339-010-5983-7
Autor:
Paula G. Bercoff, Liliana B. Pierella, Clara Saux, P.M. Botta, Toshiyuki Kanazawa, H.R. Bertorello, Ying Zhang
Publikováno v:
Journal of Magnetism and Magnetic Materials. 321:3813-3820
The structure and magnetic properties of Co-containing zeolites prepared by wet impregnation were investigated. The samples were calcined and then reduced in flowing H2. The samples studied have large saturation magnetization due to the presence of c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd6d5d8e15ae4f7921579621aea6824a
https://doi.org/10.1016/j.jmmm.2009.07.046
https://doi.org/10.1016/j.jmmm.2009.07.046
Publikováno v:
Physica B: Condensed Matter. 404:2742-2745
First order reversal curves (FORCs) distributions are a powerful tool for investigating hysteresis and interactions in magnetic systems and have been widely applied. La–Co substitution in barium hexaferrites has also been extensively studied. The m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d1809c46d25a5bcae03100f9a877d39
https://doi.org/10.1016/j.physb.2009.06.134
https://doi.org/10.1016/j.physb.2009.06.134
Publikováno v:
Applied Catalysis A: General. 347:55-61
The selective catalytic oxidation of styrene with hydrogen peroxide was studied over Co–ZSM-5 catalysts which differ in the preparation methods. The catalysts were obtained from NH 4 + –ZSM-5 by wetness impregnation and ion-exchange techniques fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6dade21de97f34f63084b8f2ac4097c
https://doi.org/10.1016/j.apcata.2008.05.033
https://doi.org/10.1016/j.apcata.2008.05.033
Publikováno v:
Materials Research Bulletin. 43:2026-2035
Co-containing molecular sieves with MFI structure was synthesized by the hydrothermal crystallization method and cobalt was incorporated in it by wet impregnation at different percentages. Thermal post-treatments were applied to Co-ZSM-5: calcination
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::665ae67eddbae2f477e55d3d1b65fa5b
https://doi.org/10.1016/j.materresbull.2007.09.026
https://doi.org/10.1016/j.materresbull.2007.09.026
Publikováno v:
Journal of Magnetism and Magnetic Materials. 320:e100-e103
Magnetic interactions in hexaferrite samples of Ba 1 - x La x + δ Fe 12 - x Co x O 19 composition were studied. The precursor powders—barium carbonate ( BaCO 3 ) , lanthanum oxide (La 2 O 3 ), hematite (Fe 2 O 3 ) and cobalt acetate—were milled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e294cb8bc618bc82e37132b7b7badf02
https://doi.org/10.1016/j.jmmm.2008.02.034
https://doi.org/10.1016/j.jmmm.2008.02.034
Publikováno v:
Physica B: Condensed Matter. 398:313-316
Structural and magnetic properties of melt-spun Nd4.5Fe72Co3Cr2Al1B17.5 ribbons were studied by means of differential scanning calorimetry, Mossbauer effect spectroscopy, X-ray diffraction and first-order reversal curve distributions. The presence of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce314c9e524be094a7071ce598daf380
https://doi.org/10.1016/j.physb.2007.04.063
https://doi.org/10.1016/j.physb.2007.04.063
Publikováno v:
Physica B: Condensed Matter. 398:204-207
Fine particles of hematite (mean size 55 nm) were produced by ball milling a mixture of hematite and pure Fe and annealing at 1000 °C. X-ray diffraction (XRD) and Mossbauer spectroscopy show that only α-Fe 2 O 3 is present in the final product, wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce3f8c72b75646da6266cfab0e74a690
https://doi.org/10.1016/j.physb.2007.04.028
https://doi.org/10.1016/j.physb.2007.04.028
Publikováno v:
Journal of Magnetism and Magnetic Materials. 294:e91-e94
A system of particle pairs with partial exchange coupling is studied, considering identical particles and a fixed angle between their anisotropy axes. The energy of each pair is calculated in terms of the extent of interaction, β , as a function of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43f28ecdb6662402adfde21ee508bf54
https://doi.org/10.1016/j.jmmm.2005.03.060
https://doi.org/10.1016/j.jmmm.2005.03.060