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Francisco Nivaldo Freire
Francisco Nivaldo Freire
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Structural and dielectric spectroscopy studies of the M-type barium strontium hexaferrite alloys (Ba x Sr1− x Fe12O19)
FMM Pereira, CAR Junior, MRP Santos, RSTM Sohn, FNA Freire, ...
Journal of Materials Science: Materials in Electronics 19 (7), 627-638, 2008
1062008
Hydroxyapatite screen-printed thick films: optical and electrical properties
CC Silva, HHB Rocha, FNA Freire, MRP Santos, KDA Sabóia, JC Góes, ...
Materials Chemistry and Physics 92 (1), 260-268, 2005
542005
Experimental and numerical investigation of a ceramic dielectric resonator (DRA): CaCu3Ti4O12 (CCTO)
AFL Almeida, RR Silva, HHB Rocha, PBA Fechine, FSA Cavalcanti, ...
Physica B: Condensed Matter 403 (4), 586-594, 2008
402008
Dehydrogenation of ethylbenzene with CO2 to produce styrene over Fe-containing ceramic composites
JCS de Araujo, CBA Sousa, AC Oliveira, FNA Freire, AP Ayala, ...
Applied Catalysis A: General 377 (1-2), 55-63, 2010
382010
Structural and electrical properties of TeO2–V2O5–K2O glassy systems
SA Salehizadeh, BMG Melo, FNA Freire, MA Valente, MPF Graça
Journal of Non-Crystalline Solids 443, 65-74, 2016
312016
Dielectric relaxation of BaTiO3 (BTO)–CaCu3Ti4O12 (CCTO) composite screen-printed thick films at low temperatures
PBA Fechine, AFL Almeida, FNA Freire, MRP Santos, FMM Pereira, ...
Materials chemistry and physics 96 (2-3), 402-408, 2006
282006
Radio-frequency (RF) studies of the magneto-dielectric composites: Cr0. 75Fe1. 25O3 (CRFO)–Fe0. 5Cu0. 75Ti0. 75O3 (FCTO)
HHB Rocha, FNA Freire, MRP Santos, JM Sasaki, T Cordaro, ...
Physica B: Condensed Matter 403 (17), 2902-2909, 2008
262008
Microstrip antenna on a high dielectric constant substrate: BaTiO3 (BTO)-CaCu3Ti4O12 (CCTO) composite screen-printed thick films
PBA Fechine, A Tavora, LC Kretly, AFL Almeida, MRP Santos, FNA Freire, ...
Journal of electronic materials 35 (10), 1848-1856, 2006
262006
Bandwidth enhancement of stacked dielectric resonator antennas excited by a coaxial probe: an experimental and numerical investigation
HHB Rocha, FNA Freire, R Sohn, MG Da Silva, MRP Santos, ...
IET Microwaves, Antennas & Propagation 2 (6), 580-587, 2008
252008
Studies of the temperature coefficient of capacitance (TCC) of a new electroceramic composite: Pb (Fe0. 5Nb0. 5) O3 (PFN)–Cr0. 75Fe1. 25O3 (CRFO)
FNA Freire, MRP Santos, FMM Pereira, RSTM Sohn, JS Almeida, ...
Journal of Materials Science: Materials in Electronics 20 (2), 149-156, 2009
242009
Effects of potential deposition on the parameters of ZnO dye-sensitized solar cells
VF Nunes, APS Souza, F Lima, G Oliveira, FN Freire, AF Almeida
Materials Research 21, 2018
172018
Nanostructured titanium dioxide average size from alternative analysis of Scherrer's Equation
FM Lima, FM Martins, PHF Maia Júnior, AFL Almeida, FNA Freire
Matéria (Rio de Janeiro) 23, 2018
172018
Electrical and dielectric analysis of phosphate based glasses doped with alkali oxides
MPF Graça, BMG Melo, PR Prezas, MA Valente, FNA Freire, L Bih
Materials & Design 86, 427-435, 2015
172015
Electrical analysis of niobium oxide thin films
MPF Graça, M Saraiva, FNA Freire, MA Valente, LC Costa
Thin Solid Films 585, 95-99, 2015
172015
Biocomposites from dwarf-green Brazilian coconut impregnated with cashew nut shell liquid resin
ACH Barreto, AEC Junior, JEB Freitas, DS Rosa, WM Barcellos, ...
Journal of Composite Materials 47 (4), 459-466, 2013
172013
Dielectric resonator antenna: Operation of the magnetodielectric composites Cr0.75Fe1.25O3 (CRFO)/Fe0.5Cu0.75Ti0.75O3 (FCTO)
HHB Rocha, FNA Freire, RCS Costa, RSTM Sohn, G Orjubin, C Junqueira, ...
Microwave and Optical Technology Letters 49 (2), 409-413, 2007
152007
Temperature dependent upconversion and spectroscopic properties of Nd3+ doped barium bismuth tellurite glasses
K Pavani, SR Gavinho, M Seshadri, V Anjos, MJV Bell, FN Freire, ...
Journal of Non-Crystalline Solids 498, 89-94, 2018
142018
Power dependent upconversion in Er3+/Yb3+ co-doped BiNbO4 phosphors
AJM Sales, DG Sousa, HO Rodrigues, MM Costa, ASB Sombra, ...
Ceramics International 42 (6), 6899-6905, 2016
142016
Structural properties study of the magneto-dielectric composite: Cr0. 75Fe1. 25O3 (CRFO): Fe0. 5Cu0. 75Ti0. 75O3 (FCTO)
HHB Rocha, FNA Freire, RR Silva, DX Gouveia, JM Sasaki, MRP Santos, ...
Journal of alloys and compounds 481 (1-2), 438-445, 2009
122009
Study of structural, electrical, and dielectric properties of phosphate-borate glasses and glass-ceramics
BMG Melo, MPF Graça, PR Prezas, MA Valente, AF Almeida, FNA Freire, ...
Journal of Applied Physics 120 (5), 051701, 2016
112016
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