Zobrazeno 1 - 10
of 247
pro vyhledávání: '"Moreira, J. Agostinho"'
Autor:
Nonato, A., Vilar, S. Y., Mira, J., Señarís-Rodríguez, María A., andújar, Manuel Sánchez, Moreira, J. Agostinho, Almeida, A., Silva, R. X., Paschoal, C. W. A.
Magnetoelectric (ME) materials displaying strong magnetically induced polarization have attracted considerable interest due to their potential applications in spintronics and various fast electrically controlled magnetic devices. CaMn$_7$O$_{12}$ (CM
Externí odkaz:
http://arxiv.org/abs/2410.12041
Two Displacive Ferroelectric Phase Transitions in Multiferroic Quadruple Perovskite $BiMn_{7}O_{12}$
Autor:
Maia, A., Kempa, M., Bovtun, V., Vilarinho, R., Kadlec, C., Moreira, J. Agostinho, Belik, A. A., Proschek, P., Kamba, S.
We report on the microwave, terahertz (THz), infrared and Raman spectroscopic studies of $BiMn_{7}O_{12}$ ceramics, shedding more light into the nature of two structural phase transitions and their possible relation with ferroelectricity in this comp
Externí odkaz:
http://arxiv.org/abs/2401.02808
Autor:
Maia, A., Vilarinho, R., Proschek, P., Lebeda, M., Mihalik jr., M., Mihalik, M., Manuel, P., Khalyavin, D. D., Kamba, S., Moreira, J. Agostinho
The correlation between static magnetoelectric coupling and magnetic structure was investigated in $TbMn_{0.98}Fe_{0.02}O_{3}$ with magnetic field up to 8 T and down to 2 K. Single-crystal neutron diffraction experiments reveal a substantial increase
Externí odkaz:
http://arxiv.org/abs/2401.02802
Autor:
Maia, A., Vilarinho, R., Kadlec, C., Lebeda, M., Mihalik, Jr., M., Zentková, M., Mihalik, M., Moreira, J. Agostinho, Kamba, S.
Publikováno v:
Phys. Rev. B 107, 104410 (2023)
We report a comprehensive study of the low-level substitution of Mn$^{3+}$ by Fe$^{3+}$ effect on the static and dynamic magnetoelectric coupling in TbMn$_{1-x}$Fe$_x$O$_3$ ($x=0$, 0.02 and 0.04). The cationic substitution has a large impact on the b
Externí odkaz:
http://arxiv.org/abs/2303.07029
Autor:
Gonçalves, Helena M.R., Neves, Susana A.F., Rodriguez, Sabela, Pereira, Rui F.P., Vilarinho, Rui, Moniz, Tânia, Rangel, Maria, Moreira, J. Agostinho, Martins-Lopes, Paula, Adega, Filomena, Davis, Frank, Higson, Séamus P.J., Cardoso, Marita A.
Publikováno v:
In Biosensors and Bioelectronics: X August 2024 19
Autor:
Rodrigues, Tiago, Silva, José P.B., Figueiras, Fábio, Soares, M.R., Vilarinho, R., Moreira, J. Agostinho, Çaha, Ihsan, Deepak, Francis Leonard, Almeida, Bernardo
Publikováno v:
In Materials Today Nano June 2024 26
Autor:
Ribeiro, Tiago P., Salgado, Bárbara, Pinto, Jéssica, Silva, Pedro C., Santos, João A.M., Moreira, J. Agostinho, Monteiro, Fernando J., Laranjeira, Marta S.
Publikováno v:
In Materials Today Chemistry January 2024 35
Autor:
Vilarinho, R., Bouvier, P., Guennou, M., Peral, I., Weber, M. C., Tavares, P., Mihalik jr., M., Mihalik, M., Garbarino, G., Mezouar, M., Kreisel, J., Almeida, A., Moreira, J. Agostinho
Publikováno v:
Phys. Rev. B 99, 064109 (2019)
This work reports on the pressure dependence of the octahedra tilts and mean Fe-O bond lengths in RFeO3 (R=Nd, Sm, Eu, Gd, Tb and Dy), determined through synchrotron X-ray diffraction and Raman scattering, and their role on the pressure induced phase
Externí odkaz:
http://arxiv.org/abs/1901.06119
Publikováno v:
In Journal of Controlled Release July 2022 347:89-103
Publikováno v:
J. Mater. Chem. C, 2017,5, 10353-10359
Here we study the resistive switching (RS) effect that emerges when ferroelectric BaTiO$_{3}$ (BTO) and few-layers MoSe$_{2}$ are combined in one single structure. The C-V loops reveal the ferroelectric nature of both Al/Si/SiO$_{x}$/BTO/Au and Al/Si
Externí odkaz:
http://arxiv.org/abs/1705.04475