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Na1/2Bi1/2VO3 and K1/2Bi1/2VO3: New Lead-Free Tetragonal Perovskites with Moderate c/a Ratios

Yamamoto, Hajime ; Ogata, Takahiro ; Patel, Satyanarayan ; Koruza, Jurij ; Rödel, Jürgen ; Paul, Atanu ; Saha-Dasgupta, Tansuri ; Itoh, Mitsuru ; Azuma, Masaki (2018)
Na1/2Bi1/2VO3 and K1/2Bi1/2VO3: New Lead-Free Tetragonal Perovskites with Moderate c/a Ratios.
In: Chemistry of Materials, 2018 (30)
doi: 10.1021/acs.chemmater.8b02379
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

New lead-free tetragonal perovskites Na1/2Bi1/2VO3 and K1/2Bi1/2VO3 were synthesized under high pressure (6 GPa) and high temperature (1473 K), based on the design of materials optimizing the lone pair effect of the A-site ion and utilizing the Jahn−Teller effect in the B-siteV4+. The magnitudes of the c/a ratio and spontaneous polarization, PS, were 1.085 and 108 μC/cm2, respectively (73 μC/cm2 by the point charge model), for Na1/2Bi1/2VO3 and 1.054 and 92 μC/cm2, respectively (56 μC/cm2 by the point charge model), for K1/2Bi1/2VO3, which are comparable to the well-known lead-based ferroelectric PbTiO3. This approach can guide the design of new lead-free ferroelectric and piezoelectric materials.

Typ des Eintrags: Artikel
Erschienen: 2018
Autor(en): Yamamoto, Hajime ; Ogata, Takahiro ; Patel, Satyanarayan ; Koruza, Jurij ; Rödel, Jürgen ; Paul, Atanu ; Saha-Dasgupta, Tansuri ; Itoh, Mitsuru ; Azuma, Masaki
Art des Eintrags: Bibliographie
Titel: Na1/2Bi1/2VO3 and K1/2Bi1/2VO3: New Lead-Free Tetragonal Perovskites with Moderate c/a Ratios
Sprache: Englisch
Publikationsjahr: 17 Oktober 2018
Verlag: American Chemical Society
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Chemistry of Materials
Jahrgang/Volume einer Zeitschrift: 2018
(Heft-)Nummer: 30
DOI: 10.1021/acs.chemmater.8b02379
Kurzbeschreibung (Abstract):

New lead-free tetragonal perovskites Na1/2Bi1/2VO3 and K1/2Bi1/2VO3 were synthesized under high pressure (6 GPa) and high temperature (1473 K), based on the design of materials optimizing the lone pair effect of the A-site ion and utilizing the Jahn−Teller effect in the B-siteV4+. The magnitudes of the c/a ratio and spontaneous polarization, PS, were 1.085 and 108 μC/cm2, respectively (73 μC/cm2 by the point charge model), for Na1/2Bi1/2VO3 and 1.054 and 92 μC/cm2, respectively (56 μC/cm2 by the point charge model), for K1/2Bi1/2VO3, which are comparable to the well-known lead-based ferroelectric PbTiO3. This approach can guide the design of new lead-free ferroelectric and piezoelectric materials.

Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe
Hinterlegungsdatum: 17 Okt 2018 10:39
Letzte Änderung: 17 Okt 2018 10:39
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