Phase transitions and coexistence of magnetic and electric orders in the methylhydrazinium metal formate frameworks M Mączka, A Gagor, M Ptak, W Paraguassu, TA da Silva, A Sieradzki, ...
Chemistry of Materials 29 (5), 2264-2275, 2017
145 2017 Pressure-induced structural phase transitions and amorphization in selected molybdates and tungstates M Maczka, AG Souza Filho, W Paraguassu, PTC Freire, J Mendes Filho, ...
Progress in materials science 57 (7), 1335-1381, 2012
123 2012 Phonon calculation on olivine‐like LiMPO4 (M = Ni, Co, Fe) and Raman scattering of the iron‐containing compound W Paraguassu, PTC Freire, V Lemos, SM Lala, LA Montoro, JM Rosolen
Journal of Raman Spectroscopy: An International Journal for Original Work in …, 2005
89 2005 Impedance spectroscopy analysis of BaFe12O19 M-type hexaferrite obtained by ceramic method RM Almeida, W Paraguassu, DS Pires, RR Correa, ...
Ceramics International 35 (6), 2443-2447, 2009
88 2009 Phonons in ferroelectric Bi2WO6: Raman and infrared spectra and lattice dynamics M Maczka, J Hanuza, W Paraguassu, G Souza Filho, ...
Applied Physics Letters 92 (11), 2008
85 2008 A comparative study of negative thermal expansion materials Sc2 (MoO4) 3 and Al2 (WO4) 3 crystals W Paraguassu, M Maczka, AG Souza Filho, PTC Freire, FEA Melo, ...
Vibrational spectroscopy 44 (1), 69-77, 2007
70 2007 Phonon-instability-driven phase transitions in ferroelectric Bi 2 W O 6: Eu 3+: High-pressure Raman and photoluminescence studies M Maczka, W Paraguassu, AG Souza Filho, PTC Freire, J Mendes Filho, ...
Physical Review B 77 (9), 094137, 2008
69 2008 Pressure-induced structural transformations in the molybdate W Paraguassu, M Maczka, AG Souza Filho, PTC Freire, J Mendes Filho, ...
Physical Review B 69 (9), 094111, 2004
69 2004 High-pressure Raman study of Al2 (WO4) 3 M Maczka, W Paraguassu, AG Souza Filho, PTC Freire, J Mendes Filho, ...
Journal of Solid State Chemistry 177 (6), 2002-2006, 2004
65 2004 Temperature‐dependent Raman scattering studies of Na2 MoO4 GD Saraiva, W Paraguassu, M Maczka, PTC Freire, JA Lima Jr, ...
Journal of Raman Spectroscopy: An International Journal for Original Work in …, 2008
62 2008 Temperature-and pressure-induced phase transitions in the metal formate framework of [ND₄][Zn (DCOO) ₃] and [NH₄][Zn (HCOO) ₃]. M Mączka, P Kadłubański, PT Freire, B Macalik, W Paraguassu, ...
Inorganic Chemistry 53 (18), 9615-9624, 2014
57 2014 Effect of solvent, temperature and pressure on the stability of chiral and perovskite metal formate frameworks of [NH 2 NH 3][M (HCOO) 3](M= Mn, Fe, Zn) M Mączka, K Pasińska, M Ptak, W Paraguassu, TA da Silva, A Sieradzki, ...
Physical Chemistry Chemical Physics 18 (46), 31653-31663, 2016
56 2016 Temperature‐induced phase transformations in Na2 WO4 and Na2 MoO4 crystals CL Lima, GD Saraiva, PTC Freire, M Maczka, W Paraguassu, ...
Journal of Raman Spectroscopy 42 (4), 799-802, 2011
56 2011 Temperature- and Pressure-Induced Phase Transitions in the Metal Formate Framework of [ND4 ][Zn(DCOO)3 ] and [NH4 ][Zn(HCOO)3 ] M Mączka, P Kadłubański, PTC Freire, B Macalik, W Paraguassu, ...
Inorganic Chemistry 53 (18), 9615-9624, 2014
54 2014 Temperature‐dependent Raman scattering studies on Na2 Mo2 O7 disodium dimolybdate GD Saraiva, W Paraguassu, M Maczka, PTC Freire, FF De Sousa, ...
Journal of Raman Spectroscopy 42 (5), 1114-1119, 2011
49 2011 Structural, thermal, dielectric and phonon properties of perovskite-like imidazolium magnesium formate M Mączka, NLM Costa, A Gągor, W Paraguassu, A Sieradzki, J Hanuza
Physical Chemistry Chemical Physics 18 (20), 13993-14000, 2016
47 2016 Raman and IR Studies of Pressure- and Temperature-Induced Phase Transitions in [(CH2 )3 NH2 ][Zn(HCOO)3 ] M Mączka, TA da Silva, W Paraguassu, M Ptak, K Hermanowicz
Inorganic Chemistry 53 (23), 12650-12657, 2014
47 2014 Lattice dynamics and low‐temperature Raman spectroscopy studies of PMN–PT relaxors JA Lima, W Paraguassu, PTC Freire, AG Souza Filho, CWA Paschoal, ...
Journal of Raman Spectroscopy: An International Journal for Original Work in …, 2009
45 2009 Raman scattering studies of pressure-induced phase transitions in perovskite formates [(CH3) 2NH2][Mg (HCOO) 3] and [(CH3) 2NH2][Cd (HCOO) 3] M Mączka, TA Da Silva, W Paraguassu, KP Da Silva
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 156, 112-117, 2016
39 2016 Pressure-induced phase transitions in ferroelectric Bi2MoO6—a Raman scattering study M Mączka, PTC Freire, C Luz-Lima, W Paraguassu, J Hanuza, ...
Journal of Physics: Condensed Matter 22 (1), 015901, 2009
39 2009 
Paulo Tarso Cavalcante FreireDepartamento de Física, Universidade Federal do CearáDirección de correo verificada de fisica.ufc.br
