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Electrical Studies of Barkhausen Switching Noise in Ferroelectric lead zirconate titanate (PZT) and BaTiO3: Critical Exponents and Temperature-dependence
C. Flannigan, C. D. Tan, J. F. Scott
Previous studies of Barkhausen noise in PZT have been limited to the energy spectrum (slew rate response voltages versus time), showing agreement with avalanche models; in barium t…
Plasmon Soft Mode in an Organic-Inorganic Hybrid Perovskite
Jiyu Tian, Karuna Kara Mishra, Eli Zysman-Colman +3
We report inelastic light scattering from underdamped plasmons in azetidinium lead bromide (AzPbBr3). The plasmons are very strongly temperature dependent and serve as a soft mode…
Quantum Critical Points in Ferroelectric Relaxors: Stuffed Tungsten Bronze K3Li2Ta5O15 and Lead Pyrochlore (Pb2Nb2O7)
Rebecca M. Smith, Jonathan Gardner, Finlay D. Morrison +7
We have synthesised ceramic specimens of the tetragonal tungsten bronze K3Li2Ta5O15 (KLT) and characterized its phase transition via X-ray, dielectric permittivity, ultrasonic spec…
PbTi1-xPdxO3: A New Room-temperature Magnetoelectric Multiferroic Device Material
Elzbieta Gradauskaite, Jonathan Gardner, Rebecca M. Smith +4
There have been a large number of papers on bismuth ferrite (BiFeO3) over the past few years, trying to exploit its room-temperature magnetoelectric multiferroic properties. Althou…
Room-temperature relaxor ferroelectricity and photovoltaic effects in SnTiOx/Si thin film heterostructures
Radhe Agarwal, Yogesh Sharma, Siliang Chang +8
We have studied ferroelectricity and photovoltaic effects in atomic layer deposited (ALD) 40-nm thick SnTiO films deposited directly onto p-type (001)Si substrate. These film…
Towards Resolving Landauer's Paradox Through Direct Observation of Multiscale Ferroelastic-Ferroelectric Interplay
Colm Durkan, Asaf Hershkovitz, DaPing Chu +2
Electric-polarization reversibility in nano-ferroelectric structures renders them as a convenient platform for exploring phase transitions and developing energy-efficient switching…