TY - JOUR
T1 - Ferroelastic domain structure and phase transition in single-crystalline [PbZn1/3Nb2/3O3]1-x[PbTiO3]xobserved via in situ x-ray microbeam
AU - Li, Tao
AU - Du, Zehui
AU - Tamura, Nobumichi
AU - Ye, Mao
AU - Inguva, Saikumar
AU - Lu, Wei
AU - Zeng, Xierong
AU - Ke, Shanming
AU - Huang, Haitao
PY - 2018/4/1
Y1 - 2018/4/1
N2 - (1-x)Pb(Zn
1/3Nb
2/3)O
3-xPbTiO
3 ((1-x)PZN-xPT in short) is one of the most important piezoelectric materials. In this work, we extensively investigated (1-x)PZN-xPT (x = 0.07–0.11) ferroelectric single crystals using in-situ synchrotron μXRD, complemented by TEM and PFM, to correlate microstructures with phase transitions. The results reveal that (i) at 25 °C, the equilibrium state of (1-x)PZN-xPT is a metastable orthorhombic phase for x = 0.07 and 0.08, while it shows coexistence of orthorhombic and tetragonal phases for x = 0.09 and x = 0.11, with all ferroelectric phases accompanied by ferroelastic domains; (ii) upon heating, the phase transformation in x = 0.07 is Orthorhombic → Monoclinic → Tetragonal → Cubic. The coexistence of ferroelectric tetragonal and paraelectric cubic phases was in-situ observed in x = 0.08 above Curie temperature (T
C), and (iii) phase transition can be explained by the evolution of the ferroelectric and ferroelastic domains. These results disclose that (1-x)PZN-xPT are in an unstable regime, which is possible factor for its anomalous dielectric response and high piezoelectric coefficient.
AB - (1-x)Pb(Zn
1/3Nb
2/3)O
3-xPbTiO
3 ((1-x)PZN-xPT in short) is one of the most important piezoelectric materials. In this work, we extensively investigated (1-x)PZN-xPT (x = 0.07–0.11) ferroelectric single crystals using in-situ synchrotron μXRD, complemented by TEM and PFM, to correlate microstructures with phase transitions. The results reveal that (i) at 25 °C, the equilibrium state of (1-x)PZN-xPT is a metastable orthorhombic phase for x = 0.07 and 0.08, while it shows coexistence of orthorhombic and tetragonal phases for x = 0.09 and x = 0.11, with all ferroelectric phases accompanied by ferroelastic domains; (ii) upon heating, the phase transformation in x = 0.07 is Orthorhombic → Monoclinic → Tetragonal → Cubic. The coexistence of ferroelectric tetragonal and paraelectric cubic phases was in-situ observed in x = 0.08 above Curie temperature (T
C), and (iii) phase transition can be explained by the evolution of the ferroelectric and ferroelastic domains. These results disclose that (1-x)PZN-xPT are in an unstable regime, which is possible factor for its anomalous dielectric response and high piezoelectric coefficient.
UR - http://www.scopus.com/inward/record.url?scp=85034826602&partnerID=8YFLogxK
U2 - 10.1016/j.jeurceramsoc.2017.11.021
DO - 10.1016/j.jeurceramsoc.2017.11.021
M3 - Journal article
SN - 0955-2219
VL - 38
SP - 1488
EP - 1497
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 4
ER -