Results 81 to 90 of about 321,908 (334)

Linking hopping conductivity to giant dielectric permittivity in oxides [PDF]

, 2010
With the promise of electronics breakthrough, giant dielectric permittivity materials are under deep investigations. In most of the oxides where such behavior was observed, charged defects at interfaces are quoted for such giant behavior to occur but the
Artemenko, Alla, Bykov, Igor, Chung, U-Chan, Elissalde, Catherine, Estournès, Claude, Maglione, Mario, Mornet, Stéphane   +6 more
core   +4 more sources

Challenges during Flash Lamp Annealing of Aerosol‐Deposited Barium Titanate Films

Advanced Engineering Materials, EarlyView.
Aerosol deposition is used to rapidly deposit barium titanate films with thicknesses ranging from 2 to 16 μm at room temperature, eliminating the need for further densification. However, to recover the electromechanical properties, annealing is required, which limits the usage of temperature‐sensitive substrates.
Michel Kuhfuß, Juliette Cardoletti, Udo R. Eckstein, Shaoxiong Xie, Alexander Martin, Ken‐ichi Kakimoto, Sebastjan Glinšek, Kyle G. Webber   +7 more
wiley   +1 more source

Dielectric properties of Na0.25K0.25Bi0.5TiO3 lead-free ceramics

Acta Physica Sinica, 2006
Na0.25K0.25Bi0.5TiO3(NKBT50)lead-free ceramics were prepared by solid-state reaction. The dielectric property of the ceramics was investigated in the lemperature range from room temperature to 400℃. Our results show that there exists a dielectric anomaly in the vicinity of 70℃ for the unpoled ceramics sintered in air, which will disappear after the ...
null Zhao Su-Chuan, null Li Guo-Rong, null Zhang Li-Na, null Wang Tian-Bao, null Ding Ai-Li   +4 more
openaire   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

Aging of poled ferroelectric ceramics due to relaxation of random depolarization fields by space-charge accumulation near grain boundaries

, 2009
Migration of charged point defects triggered by the local random depolarization field is shown to plausibly explain aging of poled ferroelectric ceramics providing reasonable time and acceptor concentration dependences of the emerging internal bias field.
D. M. Smyth, G. Arlt, H. Kungl, H. Thomann, J. Glaum, K. Carl, K. Okazaki, K. Okazaki, K. Okazaki, L. D. Landau, M. J. Hoffmann, O. Hirsch, S. Takahashi, T. Granzow, Yu. A. Genenko   +14 more
core   +1 more source

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert, Matheus Roberto Bellé, Anton Yehorov, Anhelina Mospan, Till M. J. Stadtmüller, Seetharaman Sridhar, Christos G. Aneziris, Olena Volkova   +7 more
wiley   +1 more source

Enhanced Piezoelectricity and Thermal Stability of Electrostrain Performance in BiFeO₃-Based Lead-Free Ceramics. [PDF]

Nanomaterials (Basel), 2023
Shi H, Li K, Li F, Ma J, Tu Y, Long M, Lu Y, Gong W, Wang C, Shan L.   +9 more
europepmc   +1 more source

The monoclinic phase of PZT ceramics: Raman and phenomenological theory studies

, 1999
This work reports on the first Raman detection of the tetragonal to monoclinic phase transition in PZT ceramics near morphotropic phase boundary at low temperatures.
A. G. Souza Filho, A. P. Ayala, B. Jaffe, B. Noheda, C. Carabatos-Nedelec, E. B. Araújo, I. Guedes, J. A. Eiras, J. F. Meng, J. Mendes Filho, K. C. V. Lima, K. Kakewaga, M. J. Haun, M. J. Haun, M. J. Haun, M. J. Haun, M. J. Haun, P. T. C. Freire, R. Merlin   +18 more
core   +1 more source

Piezoelectric characterization of lead-free ferroelectric ceramics

Processing and Application of Ceramics, 2010
The challenge to develop high piezoelectric sensitivity and lead-free composition ferro-piezoelectric ceramics has recently dragged new attention to some classic ferroelectrics. Here, Ba(CexTi1-x)O3 (Ce-BT) and 0.94(Bi1/2Na1/2)TiO3-0.06BaTiO3 (BNBT6) ceramics were piezoelectrically characterized from measurements of complex impedance at ...
Pardo L, García A, Brebøl K, Curecheriu L P, Mitoseriu L, Mercadelli E, Galassi C   +6 more
openaire   +5 more sources

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source