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Artykuły w czasopismach na temat "Quantum paraelectrics"
WANG, C. L., i M. L. ZHAO. "BURNS TEMPERATURE AND QUANTUM TEMPERATURE SCALE". Journal of Advanced Dielectrics 01, nr 02 (kwiecień 2011): 163–67. http://dx.doi.org/10.1142/s2010135x1100029x.
Pełny tekst źródłaCourtens, E., B. Hehlen, G. Coddens i B. Hennion. "New excitations in quantum paraelectrics". Physica B: Condensed Matter 219-220 (kwiecień 1996): 577–80. http://dx.doi.org/10.1016/0921-4526(95)00817-9.
Pełny tekst źródłaCoak, Matthew J., Charles R. S. Haines, Cheng Liu, Stephen E. Rowley, Gilbert G. Lonzarich i Siddharth S. Saxena. "Quantum critical phenomena in a compressible displacive ferroelectric". Proceedings of the National Academy of Sciences 117, nr 23 (26.05.2020): 12707–12. http://dx.doi.org/10.1073/pnas.1922151117.
Pełny tekst źródłaDas, Nabyendu, i Suresh G. Mishra. "Fluctuations and criticality in quantum paraelectrics". Journal of Physics: Condensed Matter 21, nr 9 (4.02.2009): 095901. http://dx.doi.org/10.1088/0953-8984/21/9/095901.
Pełny tekst źródłaTosatti, E., i R. Martoňák. "Rotational melting in displacive quantum paraelectrics". Solid State Communications 92, nr 1-2 (październik 1994): 167–80. http://dx.doi.org/10.1016/0038-1098(94)90870-2.
Pełny tekst źródłaKleemann, W., Y. G. Wang, P. Lehnen i J. Dec. "Phase transitions in doped quantum paraelectrics". Ferroelectrics 229, nr 1 (maj 1999): 39–44. http://dx.doi.org/10.1080/00150199908224315.
Pełny tekst źródłaWang, Y. G., W. Kleemann, J. Dec i W. L. Zhong. "Dielectric properties of doped quantum paraelectrics". Europhysics Letters (EPL) 42, nr 2 (15.04.1998): 173–78. http://dx.doi.org/10.1209/epl/i1998-00225-3.
Pełny tekst źródłaWang, Y. G., W. Kleemann, W. L. Zhong i L. Zhang. "Impurity-induced phase transition in quantum paraelectrics". Physical Review B 57, nr 21 (1.06.1998): 13343–46. http://dx.doi.org/10.1103/physrevb.57.13343.
Pełny tekst źródłaTotsuji, Chieko, i Takeo Matsubara. "Stress Induced Ferroelectric Phase Transitionin Quantum-Paraelectrics". Journal of the Physical Society of Japan 60, nr 10 (15.10.1991): 3549–56. http://dx.doi.org/10.1143/jpsj.60.3549.
Pełny tekst źródłaCourtens, Eric. "Is there an unusual condensation in quantum paraelectrics?" Ferroelectrics 183, nr 1 (lipiec 1996): 25–38. http://dx.doi.org/10.1080/00150199608224089.
Pełny tekst źródłaRozprawy doktorskie na temat "Quantum paraelectrics"
Linnik, Ekaterina. "Propriétés spectrales des paraélectriques quantiques". Electronic Thesis or Diss., Amiens, 2022. http://www.theses.fr/2022AMIE0037.
Pełny tekst źródłaA quantum paraelectric SrTiO3 is a material situated in close proximity to a quantum critical point of ferroelectric transition in which the critical temperature of ferroelectric state is suppressed down to 0 K. However, the understanding of the behaviour of the phase transition in the vicinity of this point remains challenging. Here we study the solid solutions based on the SrTiO3 to approach the pre-critical regions of the phase diagram and study the outcome of the coexistence of quantum fluctuations and thermal motion. It will allow the discovery of the novel phase statements and physical properties, occurring due to competition of quantum and classical regimes. We study the crystal structure and lattice dynamics of quantum paraelectric BaxSr1 xTiO3 solid solutions using X-Ray diffraction, Raman and terahertz-infrared (THz-IR)-spectroscopies in a temperature range 4-300K. The X-Ray diffraction and Raman spectroscopy reveal the cubic-to-tetragonal non-polar structural phase transition at about 100K. At the same time, Raman spectra manifest the presence of polar modes, TO2 and TO4, normally prohibited in paraelectric phase. Emergence of these modes indicates the appearance of the polar nanoregions in a broad temperature range. The modes become more intensive at low temperatures, the temperature dependence of their intensities on cooling reveals the kink-like change of the slope from flat to steep, indicating on activation of polar nanoregions. The transmission THz-IR-spectra show, that squared frequencies of the polar TO1 soft modes, responsible for the ferroelectric transition, follow the Cochran’s behavior at high temperatures. However, at low temperatures, it does not vanish at extrapolated Curie temperature but saturates, demonstrating the plateau feature below 20K. This behavior, coherent with the known saturation of the dielectric constant, indicates that transition to ferroelectric phase in BaxSr1-xTiO3 is suppressed by quantum fluctuations and system stays in the quantum paraelectric state at very low temperatures. Using the concentration of Pb in PbxSr1-xTiO3 solid solutions as a tuning parameter and applying the combination of Raman and dielectric spectroscopy methods we approach the quantum critical point in PbxSr1-xTiO3 and study the interplay of classical and quantum phenomena in the region of criticality. We obtain the critical temperature of PbxSr1-xTiO3 and the evolution of the temperature-dependent dynamical properties of the system as a function of x to reveal the mechanism of the transition. We show that the ferroelectric transition occurs gradually through the emergence of the polar nanoregions. We study also the cubic-to-tetragonal structural transition, occurring at higher temperatures, and show that its properties are almost concentration-independent and not affected by the quantum criticality. We also study the dielectric properties for the PbxSr1-xTiO3 in detail and show that in the composition with x = 0.005, a smooth plateau is observed in the temperature dependence of the dielectric permittivity. The height of the plateau depends on the Pb concentration and gradually decreases when x increases. This plateau arises due to random quantum fluctuations of the ions which dominate at low temperatures and concentrations. At higher x, the thermal fluctuations become more pronounced; therefore the plateau disappears
Martonak, Roman. "Models of quantum paraelectric behaviour of perovskites". Doctoral thesis, SISSA, 1993. http://hdl.handle.net/20.500.11767/4058.
Pełny tekst źródłaKsiążki na temat "Quantum paraelectrics"
From Quantum Paraelectric/Ferroelectric Perovskite Oxides to High Temperature Superconducting Copper Oxides -- In Honor of Professor K.A. Müller for His Lifework. MDPI, 2021. http://dx.doi.org/10.3390/books978-3-0365-0475-9.
Pełny tekst źródłaCzęści książek na temat "Quantum paraelectrics"
Dolin, S. P., A. A. Levin, T. Yu Mikhailova i M. V. Solin. "Quantum-Chemical Approach to Zero-Dimensional Antiferroelectrics and Quantum Paraelectrics of the K3H(SO4)2 Family". W Vibronic Interactions: Jahn-Teller Effect in Crystals and Molecules, 263–68. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0985-0_30.
Pełny tekst źródłaSamara, G. A. "From Ferroelectric to Quantum Paraelectric: KTa1-xNbxO3 (KTN), a Model System". W Frontiers of High Pressure Research II: Application of High Pressure to Low-Dimensional Novel Electronic Materials, 179–88. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0520-3_14.
Pełny tekst źródłaTkach, Alexander, i Paula M. Vilarinho. "Nonstoichiometry Role on the Properties of Quantum-Paraelectric Ceramics". W Structure Processing Properties Relationships in Stoichiometric and Nonstoichiometric Oxides. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.89499.
Pełny tekst źródła"Dipolar and Quantum Paraelectric Behavior". W Properties of Perovskites and Other Oxides, 467–501. WORLD SCIENTIFIC, 2010. http://dx.doi.org/10.1142/9789814293365_0008.
Pełny tekst źródłaKohmoto, Toshiro, i Yuka Koyam. "Photo-induced Effect in Quantum Paraelectric Materials Studied by Transient Birefringence Measurement". W Ferroelectrics - Physical Effects. InTech, 2011. http://dx.doi.org/10.5772/17132.
Pełny tekst źródłaKohmoto, Toshiro. "Doping-Induced Ferroelectric Phase Transition and Ultraviolet-Illumination Effect in a Quantum Paraelectric Material Studied by Coherent Phonon Spectroscopy". W Advances in Ferroelectrics. InTech, 2012. http://dx.doi.org/10.5772/52140.
Pełny tekst źródłaStreszczenia konferencji na temat "Quantum paraelectrics"
Arago, C., M. I. Marques, C. L. Wang i J. A. Gonzalo. "Quantum paraelectrics revisited under effective field approach". W 2009 18th IEEE International Symposium on the Applications of Ferroelectrics (ISAF). IEEE, 2009. http://dx.doi.org/10.1109/isaf.2009.5307524.
Pełny tekst źródłaHoffmann, Matthias C. "THz driven soft mode dynamics in quantum paraelectrics". W Terahertz Emitters, Receivers, and Applications XIV, redaktorzy Manijeh Razeghi i Mona Jarrahi. SPIE, 2023. http://dx.doi.org/10.1117/12.2681933.
Pełny tekst źródłaMatsushita, E., i S. Segawa. "Note on Oxygen Isotope Effect and Ferroelectric Transition in Quantum Paraelectrics". W 2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics. IEEE, 2007. http://dx.doi.org/10.1109/isaf.2007.4393235.
Pełny tekst źródłaVenturini, E. L. "Pressure As A Probe Of The Physics Of Compositionally-Substituted Quantum Paraelectrics: SrTiO3". W Fundamental Physics of Ferroelectrics 2003. AIP, 2003. http://dx.doi.org/10.1063/1.1609931.
Pełny tekst źródłaAnderson, Christopher, Giovanni Scuri, Alex White, Daniil Lukin, Erik Szakiel, Josh Yang, Kasper Van Gasse i in. "Quantum critical electro-optic materials for photonics". W CLEO: Science and Innovations. Washington, D.C.: Optica Publishing Group, 2023. http://dx.doi.org/10.1364/cleo_si.2023.sf1e.5.
Pełny tekst źródłaPopov, Vladimir, i Ida Tyschenko. "SEMICONDUCTOR-DIELECTRIC-SEMICONDUCTOR STRUCTURES FOR RF, PHOTONIC, NEURONET AND NANOSCALE INTEGRATED CIRCUITS". W International Forum “Microelectronics – 2020”. Joung Scientists Scholarship “Microelectronics – 2020”. XIII International conference «Silicon – 2020». XII young scientists scholarship for silicon nanostructures and devices physics, material science, process and analysis. LLC MAKS Press, 2020. http://dx.doi.org/10.29003/m1574.silicon-2020/117-119.
Pełny tekst źródłaLi, Xiaojiang, Peisong Peng, Sergey Prosandeev, L. Bellaiche i Diyar Talbayev. "Long-lived THz-induced birefringent state in quantum paraelectric KTaO3". W CLEO: QELS_Fundamental Science. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_qels.2022.ftu4b.2.
Pełny tekst źródłaSamara, G. A. "From Ferroelectric to Quantum Paraelectric: KTa1−xNbxO3 (KTN), A Model System". W SHOCK COMPRESSION OF CONDENSED MATTER - 2003: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP, 2004. http://dx.doi.org/10.1063/1.1780211.
Pełny tekst źródłaHasegawa, Tomoharu, i Koichiro Tanaka. "Observation of coherent domains by hyper-Rayleigh scattering in quantum paraelectric SrTiO3". W Nonlinear Optics: Materials, Fundamentals and Applications. Washington, D.C.: OSA, 2000. http://dx.doi.org/10.1364/nlo.2000.tub23.
Pełny tekst źródłaManaka, Hirotaka, Koki Uetsubara i Yoko Miura. "Stress-Induced Ferroelectricity in Quantum Paraelectric SrTiO3 Observed by Birefringence Imaging". W Proceedings of the 29th International Conference on Low Temperature Physics (LT29). Journal of the Physical Society of Japan, 2023. http://dx.doi.org/10.7566/jpscp.38.011112.
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