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1
Content available remote Localized centers and correlated magnetic spin systems in titanium oxides nanocomposites
100%
Guskos, N.
Archives of Materials Science and Engineering
2015 Vol. 74, nr 1 23--31
EN Purpose: The aim of this review is recapitulating the FMR/EPR study of localized magnetic centers and clusters in co modified nanocomposites titanium dioxide by nitrogen and group of transitions magnetic metals. Design/methodology/approach: In some cases, modified in this way, titanium dioxides impr[...]
2
Content available remote Low concentration magnetic nanoparticle and localized magnetic centers in different materials: studies by FMR/EPR method
100%
Guskos, N.
Journal of Achievements in Materials and Manufacturing Engineering
2012 Vol. 54, nr 1 25--38
EN Purpose: The aim of this review is recapitulating the temperature dependence of FMR/EPR spectra of low concentration of magnetic nanoparticles and ultralow concentration localized magnetic centers (defects, free radicals, the lower oxidation state of titanium ions) in different materials. Design/met[...]
3
Content available remote ESR study of spin dynamics in (Er0.5Y0.5)2Cu2O5 solid solution
63%
Typek, J. Guskos, N.
Materials Science Poland
2006 Vol. 24, No. 4 901--912
EN Powder samples of (Er0.5Y0.5)2Cu 2O5 have been synthesized by a solid state reaction method. Electron spin resonance (ESR) measurements have been carried out on a Broker E 500 X-band spectrometer in the 4-300 K temperature range. A single, almost Lorentzian-shaped resonance line has been recorded fo[...]
4
Content available remote FMR study of magnetic nanoparticles embedded in non-magnetic matrix
51%
Guskos, N. Anagnostakis, E. A. Guskos, A.
Journal of Achievements in Materials and Manufacturing Engineering
2007 Vol. 24, nr 1 26-35
EN Purpose: The aim of this review is recapitulating the FMR study of low concentration of magnetic nanoparticles in non-magnetic matrices. Design/methodology/approach: Magnetic nanoparticles exhibit a variety of anomalous magnetic properties and they could be used for forming low concentration in dif[...]
5
Content available remote Synthesis and ESR study of (TbxY1 - x)2Cu2O5 solid solutions
51%
Typek, J. Kostrzewa, J. Guskos, N.
Materials Science Poland
2005 Vol. 23, No. 4 929--938
EN Polycrystalline samples of (TbxY1 - x)2Cu2O5, where x = 1.0, 0.75, 0.50, 0.38, 0.25, 0.125 and 0, were synthesized by the solid-state reaction technique. XRD measurements showed that the obtained samples are single-phase and belong to the orthorhombic space group Pna21. The observed linear change of[...]
6
Content available remote Magnetic resonance study of SbVO5 thermal decomposition products
51%
Typek, J. Filipek, E. Maryniak, M. Guskos, N.
Materials Science Poland
2005 Vol. 23, No. 4 1047--1054
EN A new SbVO5 compound, which can be synthesized from an equimolar mixture of Sb2O3/V2O5 or ?-Sb2O4/V2O5 oxides by heating in air to temperatures below 650 °C, is stable in air up to 710 °C and in argon atmosphere up to ~645 °C. At higher temperatures it decomposes into a phase with a rutile-type stru[...]
7
Content available remote Electron spin resonance study of copper(II) hydrogenmalonate dihydrate complex
45%
Marczyński, S. Typek, J. Guskos, N. Grech, E. Kołodziej, B.
Materials Science Poland
2006 Vol. 24, No. 4 1077--1085
EN Copper(II) hydrogenmalonate dihydrate complex has been studied by using the electron spin resonance (ESR) method. Numerically deconvoluted ESR spectra of Cu(II) ions have been investigated at 4.2-295 K temperature range. The powder ESR spectrum has been described by three g-factors and additionally [...]
8
Content available remote Study of magnetic inhomogeneity in b-Cu3Fe4V6O24
45%
Guskos, N. Zolnierkiewicz, G. Typek, J. Szymczak, R. Blonska-Tabero, A.
Materials Science Poland
2012 Vol. 30, No. 1 1--9
EN The temperature dependence of dc magnetization and electron paramagnetic resonance (EPR) spectra of the b-Cu3Fe4V6O24 multicomponent vanadate were investigated. Dc magnetic measurements showed the presence of strong antiferromagnetic interactions (Curie-Weiss temperature, Q 80 K) at high temperature[...]
9
Content available remote Electronic properties of M2InV3O11 (M(II) = Zn(II) and Co(II)) compounds
45%
Guskos, N. Glenis, S. Karkas, K. Zolnierkiewicz, G. Bosacka, M.
Materials Science Poland
2013 Vol. 31, No. 1 25-28
EN The electronic properties of multicomponent vanadate oxides M2InV3O11 (M(II) = Zn(II) and Co(II)) were investigated by electrical resistivity and electron paramagnetic resonance (EPR) measurements. Replacement of non-magnetic Zn(II) cations with magnetic Co(II) ions resulted in a significant drop in[...]
10
Content available remote The linewidths and pintegrated intensities of the d-d transitions in photoacoustic spectra of polyamine copper(II) complexes
45%
Guskos, N. Typek, J. Papadopoulos, G. J. Maryniak, M. Aidinis, K.
Materials Science Poland
2005 Vol. 23, No. 4 955--960
EN Photoacoustic spectra of the d-d transitions for three different series of copper(II) complexes of spermidines Spn (Spn323, Spn333, Spn343), Spm (Spm323, Spm333, Spm343) and Spc (Spc323, Spc333) have been investigated. Replacements of distant atoms, the presence or absence of water molecule in the s[...]
11
Content available remote Photoacoustic study of a new neodymium(III) hydrazone complex
45%
Guskos, N. Paschalidis, D. G. Majszczyk, J. Typek, J. Maryniak, M.
Materials Science Poland
2005 Vol. 23, No. 4 1029--1034
EN The neodymium(III) hydrazone complex [Nd(DBH)2(NO3)3] has been synthesized and characterized using microanalysis and IR spectroscopy. High-resolution photoacoustic spectrometry has been applied for studying the complex. The obtained photoacoustic spectrum has been analysed and compared to a similar [...]
12
Content available remote Magnetic resonance study of γ-Fe2O3 nanoparticles dressed in oxygen based free radicals
39%
Guskos, N. Typek, J. Zolnierkiewicz, G. Wardal, K. Guskos, A. Berczynski, P. Petridis, D.
Materials Science Poland
2013 Vol. 31, No. 4 587--594
EN Two composites consisting of g-Fe2O3 (maghemite) nanoparticles covered by two different oxygen-based free radicals derived from a 4-(methylamino)phenol sulphate and 8-hydroxy-1,3,6-trisulfonic trisodium salt acid were prepared and investigated by the magnetic resonance method in the 4 – 300 K range.[...]
13
Content available remote Study of magnetic properties of two samples from FeVO4-Co3V2O8 system
39%
Guskos, N. Zolnierkiewicz, G. Typek, J. Szymczak, R. Guskos, A. Berczynski, P. Blonska-Tabero, A.
Materials Science Poland
2013 Vol. 31, No. 4 601--610
EN Two samples containing phases formed in the FeVO4–Co3V2O8 system were prepared by a conventional sintering method. The sample designated as H5 was one-phase with the howardevansite-type structure, while the sample designated as HL7 contained a mixture of H-type and lyonsite-type structures. The temp[...]
14
Content available remote Effects of thermal treatment on magnetic properties of Ni2FeV3O11-.delta compound
39%
Guskos, N. Typek, J. Żołnierkiewicz, G. Błońska-Tabero, A. Los, S. Kempiński, W.
Materials Science Poland
2006 Vol. 24, No. 4 983--990
EN Ni2FeV3O11-.delat samples have been synthesized by the solid-state reaction method using two different heat treatment processes (samples of the type A and B). The XRD measurements have shown the same diffraction patterns for both types of samples. The temperature dependences of the electron paramagn[...]
15
Content available remote Effect of annealing on EPR spectra of Ti-Si-C-N samples
39%
Guskos, N. Anagnostakis, E. A. Zolnierkiewicz, G. Typek, J. Biedunkiewicz, A. Guskos, A. Berczynski, P.
Materials Science Poland
2012 Vol. 30, No. 1 23--31
EN Two nanocrystalline samples of TiC+SiC+20%C (sample 1) and Si3N4+Si(C,N)+Ti(C,N)+1%C (sample 2) were prepared by non-hydrolytic sol-gel method. The latter sample was produced from sample 1, by subjecting it to additional annealing at high temperature. XRD measurements showed the presence of aggregat[...]
16
Study of magnetic agglomerates in the nanomaterial system (Ti-Si-C(N))/C by the magnetic resonanse technique
39%
Guskos, N. Anagnostakis, E. A. Żołnierkiewicz, G. Typek, J. Likodimos, V. Guskos, A. Biedunkiewicz, A.
Elektronika : konstrukcje, technologie, zastosowania
2008 Vol. 49, nr 5 18-21
PL Nanomateriał (Ti-Si-C(N)) został wytworzony metodą sol-żel w strumieniu gazowego azotu. Widmo ERP tego materiału składa się z bardzo wąskiej linii pochodzącej od zlokalizowanych centrów magnetycznych oraz z dodatkowego silnego i szerokiego sygnału znajdującego się w słabym polu magnetycznym. Obliczo[...]
EN The nanomaterial system (Ti-Si-C(N)) has been prepared by a sol-gel method in flowing nitrogen atmosphere. In its magnetic response a very wide ESR line has been observed, arising from localized magnetic centers, along with an additional very broad and intense line in low magnetic field. The pertine[...]
17
Content available remote Characterization and EPR studies of TiC and TiN ceramics at room temperature
39%
Bodziony, T. Guskos, N. Biedunkiewicz, A. Typek, J. Wróbel, R. Maryniak, M.
Materials Science Poland
2005 Vol. 23, No. 4 899--907
EN Four samples, namely TiC/C, TiN/C, (TiC + FexCy + Fe)/C and TiN/amorphous carbon, have been prepared and investigated. In the former three samples titanium compounds were placed in a carbon matrix, while in the fourth one TiN was surrounded by an amorphous carbon. The samples have been characterized[...]
18
Content available remote Magnetic resonance study of M3Fe4V6O24 (M = Mg, Zn, Mn, Cu, Co) compounds
39%
Guskos, N. Typek, J. Zolnierkiewicz, G. Blonska-Tabero, A. Kurzawa, M. Bosacka, M.
Materials Science Poland
2005 Vol. 23, No. 4 923--928
EN Multicomponent vanadates, M3Fe4V6O24 (M = Mg(II), Mn(II), Zn(II), Co(II) and Cu(II)), have been synthesized by the solid-state reaction method using a stoichiometric mixture of MO, Fe2O3, and V2O5 oxides. They crystallize in the triclinic space ace group P1 and have a complicated structure with two [...]
19
Content available remote FMR study of gamma-Fe2O3 magnetic nanoparticles in a multiblock poly(ether-ester) copolymer matrix
39%
Guskos, N. Typek, J. Maryniak, M. Roslaniec, Z. Petridis, D. Kwiatkowska, M.
Materials Science Poland
2005 Vol. 23, No. 4 971--976
EN Four samples containing gamma-Fe2O3 magnetic nanoparticles dispersed at a concentration of 0.1 % (samples I and I') and 0.3 % (samples II and II') in a polymer matrix have been prepared. The polymer filler was in two forms: as solid-state grains (samples I and II) and as a liquid solution in trichlo[...]
20
Content available remote Temperature dependence of the FMR spectra of Fe3O4 and Fe3C nanoparticle magnetic systems in copolymer matrices
39%
Guskos, N. Typek, J. Roslaniec, Z. Narkiewicz, U. Kwiatkowska, M. Maryniak, M.
Materials Science Poland
2005 Vol. 23, No. 4 1055--1063
EN A binary magnetic nanoparticle system, consisting of Fe3O4 (35 wt. %), Fe3C (29 wt. %), and C (36 wt. %) filling in a PTMO-block-PET polymer at low concentration (0.3 %), has been synthesized. X-ray and SEM analyses have been carried out. The temperature dependence of the FMR spectrum of this system[...]
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