M
Miguel A. Novak
Researcher at Federal University of Rio de Janeiro
Publications - 119
Citations - 8511
Miguel A. Novak is an academic researcher from Federal University of Rio de Janeiro. The author has contributed to research in topics: Magnetization & Magnetic susceptibility. The author has an hindex of 34, co-authored 118 publications receiving 8148 citations. Previous affiliations of Miguel A. Novak include Centre national de la recherche scientifique.
Papers
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Journal ArticleDOI
Assembly of γ-Fe 2 O 3 /polyaniline nanofilms with tuned dipolar interaction
Maria A. G. Soler,Leonardo G. Paterno,J.P. Sinnecker,J. G. Wen,E. H. C. P. Sinnecker,R. F. Neumann,M. Bahiana,Miguel A. Novak,Paulo C. Morais +8 more
TL;DR: In this article, the internal morphology and magnetic properties of layer-by-layer assembled nanofilms of polyaniline (PANI) and maghemite (γ-Fe2O3) were probed with cross-sectional transmission electron microscopy (TEM) and magnetization measurements (magnetic hysteresis loops, magnetization using zero-field cooled/field-cooled protocols, and ac magnetic susceptibility).
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Preparation of ferrofluid from cyclodextrin and magnetite
TL;DR: In this paper, a ferrofluid was obtained from magnetite and β-cyclodextrin using X-ray diffraction, transmission electron microscopy, atomic absorption spectroscopy, electron microprobe with an energy dispersive spectrometer and magnetometry.
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Synthesis, structure, electronic and magnetic properties of two new complexes obtained by coordination of Co(II) and Mn(II) phenyltrifluoroacetylacetonate with a nitronyl nitroxide radical
Denise A. Souza,Antonio S. Florencio,José Walkimar de M. Carneiro,Stéphane Soriano,Carlos B. Pinheiro,Miguel A. Novak,Maria G. F. Vaz +6 more
TL;DR: In this article, two new magnetic compounds were obtained by using β-diketonate 1,3-butanedione, 4,4,4-trifluoro-1-phenyl (Phtfac) as ligand.
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Magnetic ordering in nitroxide multiradicals
TL;DR: In this paper, a ferromagnetic transition was observed in single crystals of 1,3,5,7-tetramethyl-2,6-diazaadamantane-N,N'-dioxyl ("Dupeyredioxyl"), which is characterized by a divergence of the a.c. susceptibility and the onset of spontaneous magnetization at Tc = 1.48 K.
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Magnetic Cationic Copper(II) Chains and a Mononuclear Cobalt(II) Complex Containing [Ln(hfac)4]- Blocks as Counterions.
Mateus S. de Souza,Matteo Briganti,Samira G. Reis,Danilo Stinghen,Carolina S. Bortolot,Rafael A. Allão Cassaro,Guilherme P. Guedes,Fernando de C. da Silva,Vitor F. Ferreira,Miguel A. Novak,Stéphane Soriano,Federico Totti,Maria G. F. Vaz +12 more
TL;DR: Four new heterospin compounds with molecular formula {[Cu2(hfac)3(TlTrzNIT)2][Ln( hfac)4]} n·C7H16 (LnIII = Gd (1), Tb (2), or Dy (3), where hfac is hexafluoroacetylacetonato and TlZNIT is the nitronylnitroxide radical 1-( m-tolyl)-1