Discrimination of a ferroelectric from a non-ferroelectric response in PFM by phase analyses at the harmonics of the applied Vac
Por:
Gervacio-Arciniega, J. J., Murillo-Bracamontes, E. A., Toledo-Solano, M., Fuentes, J., Portelles, J., Cruz-Valeriano, E., Palomino-Ovando, M. A., Ramirez-Sarabia, J. A., Hernandez-Gonzalez, L., Cruz, M. P.
Publicada:
21 may 2020
Categoría:
Physics and astronomy (miscellaneous)
Resumen:
In the last few decades, piezoresponse force microscopy (PFM) has been a
valuable tool to analyze ferroelectric materials at nanoscale. Domain
switching and phase-hysteresis loops acquired by PFM had been taken as a
proof of ferroelectricity; however, these two characteristics have been
observed in non-ferroelectric materials, generating uncertainty of the
characterizations carried out by PFM. To resolve this problem,
strategies have been developed but they are difficult to implement or
still fail depending on the measurement conditions. In this work, we
provide a simple method to effectively differentiate ferroelectric from
non-ferroelectric signals in PFM analyses. It is based on the comparison
of the phases of the PFM signals obtained at the first and the second
harmonics of the contact resonant frequency of the Vac applied between
the tip and the bottom electrode. To illustrate the effectiveness and
simplicity of the method, analyses were conducted on a ferroelectric PZT
film, a non-ferroelectric glass and SrTiO3 sample, and a KNN ceramic
with ferroelectric and non-ferroelectric zones. Published under license
by AIP Publishing.
Filiaciones:
Gervacio-Arciniega, J. J.:
Benemerita Univ Autonoma Puebla, Fac Ciencias Fisicomatemat, CONACYT, Av San Claudio & Av 18 Sur, Puebla 72570, Pue, Mexico
Murillo-Bracamontes, E. A.:
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol CNyN, Km 107,Carretera Tijuana Ensenada, Ensenada 22860, BC, Mexico
Toledo-Solano, M.:
Benemerita Univ Autonoma Puebla, Fac Ciencias Fisicomatemat, CONACYT, Av San Claudio & Av 18 Sur, Puebla 72570, Pue, Mexico
Fuentes, J.:
Univ La Habana, Fac Fis, Havana 10400, Cuba
Portelles, J.:
Univ La Habana, Fac Fis, Havana 10400, Cuba
Cruz-Valeriano, E.:
CINVESTAV Unidad Queretaro, Lib Norponiente 2000, Queretaro 76230, Qro, Mexico
Palomino-Ovando, M. A.:
Benemerita Univ Autonoma Puebla, Fac Ciencias Fisicomatemat, Av San Claudio & Av 18 Sur, Puebla 72570, Pue, Mexico
Ramirez-Sarabia, J. A.:
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol CNyN, Km 107,Carretera Tijuana Ensenada, Ensenada 22860, BC, Mexico
Hernandez-Gonzalez, L.:
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol CNyN, Km 107,Carretera Tijuana Ensenada, Ensenada 22860, BC, Mexico
Cruz, M. P.:
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol CNyN, Km 107,Carretera Tijuana Ensenada, Ensenada 22860, BC, Mexico
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