Results 41 to 50 of about 2,778,760 (281)

Birefringence of lead titanate (PbTiO₃) [PDF]

Journal of Applied Crystallography, 2004
Since lead titanate was first grown in single-crystal form in the 1930s, several independent reports of its linear birefringence have been published. Whilst there is overall qualitative agreement on its behaviour with temperature, the absolute values show some degree of variation.
Zekria, D, Glazer, A, Shuvaeva, V, Dec, J, Miga, S   +4 more
openaire   +1 more source

Operando Tracking of Oxygen‐Vacancy Dynamics and Negative Capacitance in Ca‐Doped BiFeO3

Advanced Functional Materials, EarlyView.
Operando electrochemical impedance spectroscopy, combined with electrocoloration, enables a direct correlation between real‐space ionic redistribution and the corresponding frequency‐domain electrical response. In lateral Ca‐doped BiFeO3 devices, time‐resolved impedance snapshots capture the evolution from bulk‐dominated mixed conduction to an ...
Jeonghun Suh, Heung‐Sik Park, Jong‐Sook Lee, Chan‐Ho Yang   +3 more
wiley   +1 more source

A New Low-Expansion Composite in Lead Iron Niobate-Lead Titanate System

Active and Passive Electronic Components, 1997
A composite prepared between lead titanate (PT) and lead iron niobate (PFN) exhibits low thermal expansion coefficient (α) over the temperature range 300–673K.
V. V.S.S. Sai Sundar, A. M. Umarji
doaj   +1 more source

Preparation and characterization of PbTi0(3) ceramics modified by a natural mixture of rare earth oxides of xenotime [PDF]

Materials Research, 2013
Lead titanate ceramics modified by xenotime (Xm) with nominal composition (Pb, Xm)TiO3, Xm 10 or 15 mol %, were prepared by the conventional oxide mixture technique. Xenotime is a natural mineral consisting of a mixture of rare earth oxides.
Jair Baltazar-Rodrigues, Pedro Rodrigues Jr, Gerson K. da Cruz, Manuel H. Lente, José A. Eiras   +4 more
doaj   +2 more sources

Real-Time Ferroelectric Domain Wall Dynamics During Electric Poling and Depoling. [PDF]

Adv Sci (Weinh)
Real‐time visualization of domain wall dynamics during alternating‐current poling, direct‐current poling, and electrical depoling in relaxor‐PT ferroelectric single crystals reveals distinct field‐dependent pathways and strong path dependence. Instant polarized light microscopy uncovers reversible domain wall nucleation, motion, and reconfiguration ...
Wang Z, Xu Z, Timofeeva A, Elnaggar H, Liu S, Pei Y, Henry R, O'Connor B, Shim E, So F, Peters K, Jiang X, Liu J.   +12 more
europepmc   +2 more sources

Topotatic‐Like Phase Transformation of Amorphous Lead Titanate to Cubic Lead Titanate

Journal of the American Ceramic Society, 2002
The crystallization process of lead titanate (PT) prepared using the polymeric precursor method was investigated using X‐ray diffractometry, Raman spectroscopy, electron microscopy, and X‐ray absorption spectroscopy techniques. The results showed that amorphous PT was formed by an O–Ti–O structure composed of fivefold and sixfold oxygen‐coordinated ...
Leite, E. R., Paris, E. C., Longo, Elson, Lanciotti, F., Campos, CEM, Pizani, P. S., Mastelaro, V, Paskocimas, C. A., Varela, José Arana   +8 more
openaire   +2 more sources

Atom Probe Tomography as an Emerging Tool for Understanding Defect‑Driven Mechanisms in HfO2‑Based Ferroelectrics

Advanced Functional Materials, EarlyView.
This Perspective highlights atom probe tomography as a powerful tool for understanding the atomic‐scale defect chemistry in HfO2‐based ferroelectrics. 3D mapping of dopants, point defects, and interface chemistry can provide new insight into defect‐driven mechanisms underpinning the ferroelectricity in the system and guide the design of more reliable ...
Kasper Hunnestad, Catherine Dubourdieu, Alexei Gruverman, Dennis Meier   +3 more
wiley   +1 more source

Radiological shielding performance of selected titanate compounds: An experimental and theoretical investigation

Nuclear Engineering and Technology
The radiation shielding characteristics of selected titanate compounds, aluminum titanate (Al2TiO5), strontium titanate (SrTiO3), calcium titanate (CaTiO3), manganese titanate (MnTiO3), lithium titanate (Li2TiO3), and lead titanate (PbTiO3),were ...
Abdu Hamoud Al-khawlany, Shamsan S. Obaid, Fawziah Mohammad Al-Saar   +2 more
doaj   +1 more source

An Edible Chitosan‐Based Acoustic Sensor for Sound‐Responsive Actuation in Edible Robots

Advanced Functional Materials, EarlyView.
This study introduces an edible acoustic sensor for robotic food and edible robotics. Built from a chitosan piezoelectric film between gold electrodes, the sensor enables acoustic communication through ON/OFF keying. Integrated into an edible robot with pneumatically actuated arms and neck, it responds to high‐frequency tones.
Valerio Francesco Annese, Bokeon Kwak, Gaia de Marzo, Giulia Coco, Valentina Antonaci, Leonardo Lamanna, Massimo De Vittorio, Dario Floreano, Mario Caironi   +8 more
wiley   +1 more source

Incorporation of dysprosium ions into PbTiO3 ferroelectric ceramic system [PDF]

Journal of Advanced Dielectrics, 2015
A structural analysis concerning the incorporation of dysprosium into A- and/or B-sites of the lead titanate is shown. The two "boundary" refinements are presented, i.e., Dy2+ substitutes for Pb2+ (Dy3+ substitutes for Ti4+) and Dy3+ substitutes for Pb2+
A. Peláiz-Barranco, Y. Mendez-González, Jinfei Wang, Tongqing Yang   +3 more
doaj   +1 more source