Understanding the dielectric and electrical transport behaviors of plasma polymerized diethanolamine thin films under alternating electric field

2020 ◽  
Vol 704 ◽  
pp. 138018 ◽  
Author(s):  
Nasima Banu ◽  
A.H. Bhuiyan
Keyword(s):  
Thin Films ◽  
Electric Field ◽  
Electrical Transport ◽  
Alternating Electric Field

Kinematics and Kinetics of Alternating Electric Field Induced Liquid Mass Transport on Chromium Thin Films

2021 ◽  
Author(s):  
Swapnendu Narayan Ghosh ◽  
Vijayendra Shastri ◽  
Debjit Sarkar ◽  
Ebinesh Abraham ◽  
Santanu Talukder
Keyword(s):  
Thin Films ◽  
Electric Field ◽  
Mass Transport ◽  
Liquid Mass ◽  
Alternating Electric Field ◽  
Kinetics Of ◽  
Kinematics And Kinetics

scholarly journals Obtaining, structure, microstructure and dielectric characteristics of ceramics and thin films of ferro-piezoelectric materials based on the PZT system

2020 ◽  
Vol 10 (01n02) ◽  
pp. 2060003
Author(s):  
Inna Andryushina ◽  
Anatoliy Pavlenko ◽  
Sergey Zinchenko ◽  
Konstantin Andryushin ◽  
Lidiya Shilkina ◽  
...  
Keyword(s):  
Thin Films ◽  
Electric Field ◽  
Piezoelectric Properties ◽  
Bulk Material ◽  
Piezoelectric Materials ◽  
Hysteresis Loops ◽  
Dielectric Characteristics ◽  
Hard Materials ◽  
Alternating Electric Field ◽  
Capacitance Voltage

This paper presents the results of studies of the structure, microstructure, dependences of the piezoelectric properties on the electric field (dielectric hysteresis loops, reversible nonlinearity, deformation characteristics) and dielectric properties of the ceramic material PCR-13 (based on the PZT system) in the temperature range 300–900[Formula: see text]K and frequencies of an alternating electric field ([Formula: see text]) Hz. The character of the obtained dependences made it possible to attribute PCR-13 to ferro-hard materials. Using the HF cathodic sputtering method, PCR-13 thin films were fabricated on Si (001) substrates. It is shown that they are polycrystalline textured, while in comparison with bulk material, the film contains tensile stresses of the unit cell in the plane of the substrate and compresses in the perpendicular direction with the value [Formula: see text]. The capacitance-voltage characteristics of the Al/PCR-13/Si/Al heterostructure were studied. The reasons for the revealed patterns are discussed.

Formation of Regular Domain Structures in Quenched Ferroelectrics Under the Influence of an External High-frequency Electric Field

2019 ◽  
Vol 9 (3) ◽  
pp. 344-352 ◽  
Author(s):  
L.I. Stefanovich ◽  
O.Y. Mazur ◽  
V.V. Sobolev
Keyword(s):  
Lithium Niobate ◽  
Electric Field ◽  
Domain Structure ◽  
High Frequency ◽  
Evolution Equations ◽  
Regular Domain ◽  
Field Frequency ◽  
Domain Structures ◽  
Alternating Electric Field ◽  
Lithium Niobate Crystals

Introduction: Within the framework of the phenomenological theory of phase transitions of the second kind of Ginzburg-Landau, the kinetics of ordering of a rapidly quenched highly nonequilibrium domain structure is considered using the lithium tantalate and lithium niobate crystals as an example. Experimental: Using the statistical approach, evolution equations describing the formation of the domain structure under the influence of a high-frequency alternating electric field in the form of a standing wave were obtained. Numerical analysis has shown the possibility of forming thermodynamically stable mono- and polydomain structures. It turned out that the process of relaxation of the system to the state of thermodynamic equilibrium can proceed directly or with the formation of intermediate quasi-stationary polydomain asymmetric phases. Results: It is shown that the formation of Regular Domain Structures (RDS) is of a threshold character and occurs under the influence of an alternating electric field with an amplitude less than the critical value, whose value depends on the field frequency. The conditions for the formation of RDSs with a micrometer spatial scale were determined. Conclusion: As shown by numerical studies, the RDSs obtained retain their stability, i.e. do not disappear even after turning off the external electric field. Qualitative analysis using lithium niobate crystals as an example has shown the possibility of RDSs formation in high-frequency fields with small amplitude under resonance conditions

Optical transmittance and electrical transport investigations of Fe-doped In2O3 thin films

2021 ◽  
Vol 127 (5) ◽  
Author(s):  
Afroz Khan ◽  
F. Rahman ◽  
Razia Nongjai ◽  
K. Asokan
Keyword(s):  
Thin Films ◽  
Electrical Transport ◽  
Optical Transmittance

scholarly journals Electrical transport properties and Kondo effect in La1−xPrxNiO3−δ thin films

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Van Hien-Hoang ◽  
Nak-Kwan Chung ◽  
Heon-Jung Kim
Keyword(s):  
Thin Films ◽  
Electrical Transport ◽  
Kondo Effect ◽  
Magnetic Moments ◽  
Structural Disorder ◽  
Strongly Correlated ◽  
Electrical Transport Properties ◽  
Strongly Correlated Electron ◽  
Correlated Electron Systems ◽  
Correlated Electron

AbstractThe Kondo effect has been a topic of intense study because of its significant contribution to the development of theories and understanding of strongly correlated electron systems. In this work, we show that the Kondo effect is at work in La1−xPrxNiO3−δ (0 ≤ x ≤ 0.6) thin films. At low temperatures, the local magnetic moments of the 3d eg electrons in Ni2+, which form because of oxygen vacancies, interact strongly with itinerant electrons, giving rise to an upturn in resistivity with x ≥ 0.2. Observation of negative magnetoresistance, described by the Khosla and Fisher model, further supports the Kondo picture. This case represents a rare example of the Kondo effect, where Ni2+ acts as an impurity in the background of Ni3+. We suggest that when Ni2+ does not participate in the regular lattice, it provides the local magnetic moments needed to scatter the conduction electrons in the Kondo effect. These results offer insights into emergent transport behaviors in metallic nickelates with mixed Ni3+ and Ni2+ ions, as well as structural disorder.

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