%0 Journal Article %1 WOS:000537570200102 %A Ferreira, Wellington Castro %A Rodrigues, Gelson Luiz Clemente %A Araujo, Bruno Sousa %A de Aguiar, Francisco Andre Andrade %A de Abreu Silva, Ariel Nonato Almeida %A Fechine, Pierre Basilio Almeida %A de Araujo Paschoal, Carlos William %A Ayala, Alejandro Pedro %C THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND %D 2020 %I ELSEVIER SCI LTD %J CERAMICS INTERNATIONAL %K Aurivillius Structural X-ray diffraction; phase phase; transition} {Synchrotron %N 11, A %P 18056-18062 %R 10.1016/j.ceramint.2020.04.122 %T Pressure-induced structural phase transitions in the multiferroic four-layer Aurivillius ceramic Bi5FeTi3O15 %V 46 %X The structural stability of the multiferroic four-layer Aurivillius ceramic Bi5FeTi3O15 (BFTO) under hydrostatic pressure was investigated in situ by synchrotron X-ray powder diffraction (SXRPD) and Raman spectroscopy. Measurements performed up to 15 GPa allowed the identification of two well-defined structural phase transitions. The orthorhombic phase (at ambient conditions) transforms into a tetragonal one around 3.2 GPa and a new orthorhombic phase rises around 7.5 GPa. Both phase transitions are evidenced by the pressure dependence of the lattice parameters and vibrational mode frequencies. The analysis of the induced strain indicates that the transitions are of second-order and first-order, respectively. Subtle changes in the Raman spectra and powder patterns suggest the onset of a new phase around 10.5 GPa.

@article{WOS:000537570200102, abstract = {The structural stability of the multiferroic four-layer Aurivillius ceramic Bi5FeTi3O15 (BFTO) under hydrostatic pressure was investigated in situ by synchrotron X-ray powder diffraction (SXRPD) and Raman spectroscopy. Measurements performed up to 15 GPa allowed the identification of two well-defined structural phase transitions. The orthorhombic phase (at ambient conditions) transforms into a tetragonal one around 3.2 GPa and a new orthorhombic phase rises around 7.5 GPa. Both phase transitions are evidenced by the pressure dependence of the lattice parameters and vibrational mode frequencies. The analysis of the induced strain indicates that the transitions are of second-order and first-order, respectively. Subtle changes in the Raman spectra and powder patterns suggest the onset of a new phase around 10.5 GPa.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND}, author = {Ferreira, Wellington Castro and Rodrigues, Gelson Luiz Clemente and Araujo, Bruno Sousa and de Aguiar, Francisco Andre Andrade and de Abreu Silva, Ariel Nonato Almeida and Fechine, Pierre Basilio Almeida and de Araujo Paschoal, Carlos William and Ayala, Alejandro Pedro}, biburl = {https://www.bibsonomy.org/bibtex/2147399f99b3e147a81ade14941977c35/ppgfis_ufc_br}, doi = {10.1016/j.ceramint.2020.04.122}, interhash = {cf3781dd0867ab70b33aff68faa6d80a}, intrahash = {147399f99b3e147a81ade14941977c35}, issn = {0272-8842}, journal = {CERAMICS INTERNATIONAL}, keywords = {Aurivillius Structural X-ray diffraction; phase phase; transition} {Synchrotron}, number = {11, A}, pages = {18056-18062}, publisher = {ELSEVIER SCI LTD}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Pressure-induced structural phase transitions in the multiferroic four-layer Aurivillius ceramic Bi5FeTi3O15}, tppubtype = {article}, volume = 46, year = 2020 }