scholarly journals Double Hysteresis Loop in BaTiO3-Based Ferroelectric Ceramics

10.5772/16502 ◽  
2011 ◽  
Author(s):  
Sining Yun
Keyword(s):  
Hysteresis Loop ◽  
Ferroelectric Ceramics ◽  
Double Hysteresis Loop

Double hysteresis loop in BaTi1−xHfxO3 ferroelectric ceramics

2015 ◽  
Vol 26 (8) ◽  
pp. 5833-5838 ◽  
Author(s):  
S. K. Das ◽  
B. K. Roul
Keyword(s):  
Hysteresis Loop ◽  
Ferroelectric Ceramics ◽  
Double Hysteresis Loop

A polycrystal hysteresis model for ferroelectric ceramics

2006 ◽  
Vol 462 (2069) ◽  
pp. 1573-1592 ◽  
Author(s):  
Y Su ◽  
G.J Weng
Keyword(s):  
Electric Field ◽  
Hysteresis Loop ◽  
Ferroelectric Properties ◽  
Electric Displacement ◽  
Hysteresis Loops ◽  
Ferroelectric Ceramics ◽  
Domain Growth ◽  
Thermodynamic Approach ◽  
Hysteresis Model ◽  
Self Consistent

Most key elements of ferroelectric properties are defined through the hysteresis loops. For a ferroelectric ceramic, its loop is contributed collectively by its constituent grains, each having its own hysteresis loop when the ceramic polycrystal is under a cyclic electric field. In this paper, we propose a polycrystal hysteresis model so that the hysteresis loop of a ceramic can be calculated from the loops of its constituent grains. In this model a micromechanics-based thermodynamic approach is developed to determine the hysteresis behaviour of the constituent grains, and a self-consistent scheme is introduced to translate these behaviours to the polycrystal level. This theory differs from the classical phenomenological ones in that it is a micromechanics-based thermodynamic approach and it can provide the evolution of new domain concentration among the constituent grains. It also differs from some recent micromechanics studies in its secant form of self-consistent formulation and in its application of irreversible thermodynamics to derive the kinetic equation of domain growth. To put this two-level micromechanics theory in perspective, it is applied to a ceramic PLZT 8/65/35, to calculate its hysteresis loop between the electric displacement and the electric field ( D versus E ), and the butterfly-shaped longitudinal strain versus the electric field relation ( ϵ versus E ). The calculated results are found to be in good quantitative agreement with the test data. The corresponding evolution of new domain concentration c 1 and the individual hysteresis loops of several selected grains—along with those of the overall polycrystal—are also illustrated.

Composition Dependent Fatigue in Antiferroelectric PZST Ceramics Induced by Bipolar Electric Cycling

2005 ◽  
Vol 475-479 ◽  
pp. 1193-1196
Author(s):  
Long Jie Zhou ◽  
Georg Rixecker ◽  
André Zimmermann ◽  
Fritz Aldinger
Keyword(s):  
Phase Transition ◽  
Hysteresis Loop ◽  
Fatigue Resistance ◽  
Lead Zirconate Titanate ◽  
Hysteresis Loops ◽  
Lead Zirconate ◽  
Ferroelectric Ceramics ◽  
Fatigue Effect ◽  
Zirconate Titanate ◽  
Electric Fatigue

Bipolar electric fatigue in antiferroelectrics of the lead zirconate titanate stannate ceramics family was investigated. Variations in strain hysteresis loops and damages in microstructure of the materials due to the electric cycling were analyzed. The materials showed symmetric or asymmetric suppression of strain hysteresis loop, normal or diffuse AFE-FE phase transition and intact or damaged microstructure after 5×10-7 cycles, indicating a strong composition dependent fatigue effect and the corresponding mechanism. In general, the antiferroelectric materials exhibited much higher fatigue resistance than ferroelectric ceramics reported previously.

Aging and the Double Hysteresis Loop of PblambaCa1-lambaTiO3 Ceramics

1959 ◽  
Vol 42 (4) ◽  
pp. 157-164 ◽  
Author(s):  
E. SAWAGUCHI ◽  
M. L. CHARTERS
Keyword(s):  
Hysteresis Loop ◽  
Double Hysteresis Loop

Enhanced antiferroelectricity and double hysteresis loop observed in lead-free (1−x)NaNbO3-xCaSnO3 ceramics

2019 ◽  
Vol 114 (12) ◽  
pp. 122901 ◽  
Author(s):  
Jiaming Ye ◽  
Genshui Wang ◽  
Xuefeng Chen ◽  
Fei Cao ◽  
Xianlin Dong
Keyword(s):  
Hysteresis Loop ◽  
Lead Free ◽  
Double Hysteresis Loop

A bilayer model of the double hysteresis loop in antiferroelectric liquid crystals

1999 ◽  
Vol 26 (11) ◽  
pp. 1625-1636 ◽  
Author(s):  
N. J. MOTTRAM ◽  
S. J. ELSTON
Keyword(s):  
Liquid Crystals ◽  
Hysteresis Loop ◽  
Antiferroelectric Liquid Crystals ◽  
Double Hysteresis Loop

A bilayer model of the double hysteresis loop in antiferroelectric liquid crystals

1999 ◽  
Vol 26 (11) ◽  
pp. 1625-1636
Author(s):  
N. J. Mottram, S. J. Elston
Keyword(s):  
Liquid Crystals ◽  
Hysteresis Loop ◽  
Antiferroelectric Liquid Crystals ◽  
Double Hysteresis Loop

Fabrication Of La0.7Sr0.3MnO3/La0.5Sr0.5CoO3/La0.7Sr0.3MnO3 Heterostructures for Spin Valve Applications

1997 ◽  
Vol 494 ◽  
Author(s):  
M. C. Robson ◽  
S. B. Ogale ◽  
R. Godfrey ◽  
T. Venkatesan ◽  
M. Johnson ◽  
...  
Keyword(s):  
Hysteresis Loop ◽  
Spin Valve ◽  
Ferromagnetic Material ◽  
Perovskite Oxide ◽  
Structural Quality ◽  
X Ray Diffraction ◽  
Metallic Oxide ◽  
Ferromagnetic Layers ◽  
Double Hysteresis Loop

ABSTRACTEpitaxial growth of oxide heterostructures, which may be utilized in spin valve applications, has been demonstrated. The heterostructures consist of two ferromagnetic layers separated by a nonmagnetic metallic interlayer. The ferromagnetic material used is the manganese perovskite oxide, La0.7Sr0.3MnO3, while the metallic oxide interlayer is La0.5Sr0.5CoO3. X-ray diffraction spectra demonstrate the high structural quality of the heterostructures. The magnetization of the heterostructure as a function of magnetic field measured at room temperature yields a double hysteresis loop that is characteristic of this type of spin valve structure. The behavior of this double hysteresis loop is also examined as a function of the metallic interlayer thickness.

Polarization Reversal and Double Hysteresis Loop in Copolymers of Vinylidene Fluoride and Trifluoroethylene

1986 ◽  
Vol EI-21 (3) ◽  
pp. 543-548 ◽  
Author(s):  
N. Koizumi ◽  
Y. Murata ◽  
H. Tsunashima
Keyword(s):  
Hysteresis Loop ◽  
Vinylidene Fluoride ◽  
Polarization Reversal ◽  
Double Hysteresis Loop
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