Sub-critical field domain reversal in epitaxial ferroelectric films

2014 ◽  
Vol 116 (12) ◽  
pp. 124109 ◽  
Author(s):  
Jason Chen ◽  
Alexei Gruverman ◽  
Anna N. Morozovska ◽  
Nagarajan Valanoor
Keyword(s):  
Critical Field ◽  
Ferroelectric Films ◽  
Domain Reversal

Epitaxial ferroelectric thin films

1994 ◽  
Vol 52 ◽  
pp. 572-573
Author(s):  
S. G. Ghonge ◽  
E. Goo ◽  
R. Ramesh ◽  
R. Haakenaasen ◽  
D. K. Fork
Keyword(s):  
Single Crystal ◽  
Work Function ◽  
Nonvolatile Memory ◽  
Ferroelectric Properties ◽  
Electrical Contact ◽  
Memory Devices ◽  
Ferroelectric Films ◽  
Si Substrates ◽  
Electro Optic ◽  
Wide Range

Microstructure of epitaxial ferroelectric/conductive oxide heterostructures on LaAIO3(LAO) and Si substrates have been studied by conventional and high resolution transmission electron microscopy. The epitaxial films have a wide range of potential applications in areas such as non-volatile memory devices, electro-optic devices and pyroelectric detectors. For applications such as electro-optic devices the films must be single crystal and for applications such as nonvolatile memory devices and pyroelectric devices single crystal films will enhance the performance of the devices. The ferroelectric films studied are Pb(Zr0.2Ti0.8)O3(PLZT), PbTiO3(PT), BiTiO3(BT) and Pb0.9La0.1(Zr0.2Ti0.8)0.975O3(PLZT).Electrical contact to ferroelectric films is commonly made with metals such as Pt. Metals generally have a large difference in work function compared to the work function of the ferroelectric oxides. This results in a Schottky barrier at the interface and the interfacial space charge is believed to responsible for domain pinning and degradation in the ferroelectric properties resulting in phenomenon such as fatigue.

Pulsed laser deposition of relaxor ferroelectric films

1998 ◽  
Vol 08 (PR9) ◽  
pp. Pr9-261-Pr9-264
Author(s):  
M. Tyunina ◽  
J. Levoska ◽  
A. Sternberg ◽  
V. Zauls ◽  
M. Kundzinsh ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Relaxor Ferroelectric ◽  
Laser Deposition ◽  
Ferroelectric Films

CRITICAL FIELD IN SPIN GLASSES : A SCALING ANALYSIS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1071-C8-1072
Author(s):  
M. A. Continentino ◽  
E. Szkatulla ◽  
B. Elschner ◽  
H. Maletta
Keyword(s):  
Critical Field ◽  
Spin Glasses ◽  
Scaling Analysis

Race and Affect: Pleasurable Mixing in Ben Jonson's The Masque of Blackness

2019 ◽  
Vol 26 (1) ◽  
pp. 1-20
Author(s):  
Carol Mejia Laperle
Keyword(s):  
Great Britain ◽  
Critical Field ◽  
Political Authority ◽  
Political Agenda ◽  
Affective Experience ◽  
Undue Influence ◽  
Racial Identities ◽  
Racial Impersonation ◽  
Blackface Performance ◽  
Performance Text

The critical field of The Masque of Blackness often annotates Queen Anne and her ladies’ blackface performance with a courtier's eye-witness comment that the “lean cheeked moors” were “loathsome” and “ugly.” Yet Ben Jonson's performance text, when read beside Dudley Carleton's correspondences, resists the undue influence of the aristocrat's anecdotal disparagement. This project refuses to take Carleton's denigration as fact. Instead, it investigates the masque's representation of Niger's daughters to develop the affective experience of pleasurable mixing across racial identities and to show how the opulence, innovation, and beauty afforded by blackface are the means to underwrite arguments of political authority. Rather than a deviation from the performance's magnificent appeal, racial impersonation is constitutive of the masque's demonstration of beauty and invention of pleasure. As such, the allegory of King James I's power hinges on a fiction of idealized incorporation that is ideologically powerful precisely because it is primarily an aestheticized, affective experience. Beyond the ostensible trope of racial transformation, Jonson presents the pleasure of mixing across racial identities as the precondition for Britannia's absorption of migrant bodies. Blackness is a visual reminder of an indelible difference that can be absorbed, incorporated, indeed “salved,” by the monarch's faculties of conversion. The affective experience afforded by blackface is thus an argument for the sovereign's power of unification, underwriting what was a largely unfulfilled and controversial political agenda: the coalition of realms under the aegis of Great Britain.

Ultrafast Photoinduced Strain in Super-Tetragonal PbTiO3 Ferroelectric Films

2020 ◽  
Author(s):  
Linxing Zhang ◽  
Darui Sun ◽  
Maosheng Chai ◽  
Xianran Xing ◽  
Jun Chen ◽  
...  
Keyword(s):  
Ferroelectric Films

Finite element modeling of piezoresponse in nanostructured ferroelectric films

2004 ◽  
Vol 84 (14) ◽  
pp. 2626-2628 ◽  
Author(s):  
J.-H. Li ◽  
L. Chen ◽  
V. Nagarajan ◽  
R. Ramesh ◽  
A. L. Roytburd
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Ferroelectric Films ◽  
Element Modeling

scholarly journals Tip-induced domain protrusion in ferroelectric films with in-plane polarization

2021 ◽  
Vol 129 (5) ◽  
pp. 054103
Author(s):  
S. Kondovych ◽  
A. Gruverman ◽  
I. Luk’yanchuk
Keyword(s):  
Ferroelectric Films

Enhancement of critical temperature and upper critical field due to Nb substitution in Zr-V alloy superconductors

2020 ◽  
Author(s):  
Sabyasachi Paul ◽  
S. K. Ramjan ◽  
L. S. Sharath Chandra ◽  
Archna Sagdeo ◽  
M. K. Chattopadhyay
Keyword(s):  
Critical Temperature ◽  
Critical Field ◽  
Upper Critical Field

scholarly journals Nanoscale bubble domains with polar topologies in bulk ferroelectrics

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jie Yin ◽  
Hongxiang Zong ◽  
Hong Tao ◽  
Xuefei Tao ◽  
Haijun Wu ◽  
...  
Keyword(s):  
Physical Properties ◽  
Bulk Material ◽  
Condensed Matter ◽  
Time Dependent ◽  
Morphology Evolution ◽  
Contrast Imaging ◽  
Ferroelectric Films ◽  
Modulated Phases ◽  
Ferroelectric Memories ◽  
Z Contrast

AbstractMultitudinous topological configurations spawn oases of many physical properties and phenomena in condensed-matter physics. Nano-sized ferroelectric bubble domains with various polar topologies (e.g., vortices, skyrmions) achieved in ferroelectric films present great potential for valuable physical properties. However, experimentally manipulating bubble domains has remained elusive especially in the bulk form. Here, in any bulk material, we achieve self-confined bubble domains with multiple polar topologies in bulk Bi0.5Na0.5TiO3 ferroelectrics, especially skyrmions, as validated by direct Z-contrast imaging. This phenomenon is driven by the interplay of bulk, elastic and electrostatic energies of coexisting modulated phases with strong and weak spontaneous polarizations. We demonstrate reversable and tip-voltage magnitude/time-dependent donut-like domain morphology evolution towards continuously and reversibly modulated high-density nonvolatile ferroelectric memories.

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