نتایج جستجو برای: ferroelectric materials

تعداد نتایج: 443347  

2014
Daesung Park Anja Herpers Tobias Menke Regina Dittmann Joachim Mayer

Ferroelectric materials can be used for the ferroelectric random access memory (FeRAM) For the miniaturization the thin film structures are used in general. However, there is the critical thickness of ferroelectric materials, below which ferroelectricity abruptly disappears. Besides, the depolarization field, the epitaxial strain, the termination of the ferroelectric film, and the electric file...

2017
Deyang Chen Fei Sun

Currently, researchers are mainly focusing the phase transitions, domain structures, domain wall functionalities, magneto electric coupling, and the potential applications in high-density ferroelectric non-volatile memories of ferroelectric materials [1-5]. However, there are relatively less research interests in the biomedical applications of ferroelectric materials which is very important to ...

2014
Yongbo Yuan Zhengguo Xiao Bin Yang Jinsong Huang

Arising applications of ferroelectric materials in photovoltaic devices" The ferroelectric-photovoltaic (FE-PV) device, in which a homogeneous ferroelectric material is used as a light absorbing layer, has been investigated during the past several decades with numerous ferroelectric oxides. The FE-PV effect is distinctly different from the typical photovoltaic (PV) effect in semiconductor p–n j...

2016
Xiaojun Lei Dongbo Li Rui Shao Dawn A. Bonnell

Ferroelectric nanolithography is a new approach to processing nanostructures, which can position multiple components made of various materials into predefined configurations. Local polarization in ferroelectric compounds is manipulated to control the surface electronic structure and direct attachment of molecules and particles. Here, the presence of optically excited electron-hole pairs on ferr...

2015
Zhen HUANG

The persisting demand of higher computing power and faster information processing keeps pushing scientists and engineers to explore novel materials and device structures. Within emerging functional materials, there is a focus on multiferroics materials and material-systems possessing both ferroelectric and ferromagnetic orders. Multiferroics with two order parameters coupled through a magnetoel...

2016
Fei Li Shujun Zhang Tiannan Yang Zhuo Xu Nan Zhang Gang Liu Jianjun Wang Jianli Wang Zhenxiang Cheng Zuo-Guang Ye Jun Luo Thomas R Shrout Long-Qing Chen

The discovery of ultrahigh piezoelectricity in relaxor-ferroelectric solid solution single crystals is a breakthrough in ferroelectric materials. A key signature of relaxor-ferroelectric solid solutions is the existence of polar nanoregions, a nanoscale inhomogeneity, that coexist with normal ferroelectric domains. Despite two decades of extensive studies, the contribution of polar nanoregions ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Hai-Xia Zhao Xiang-Jian Kong Hui Li Yi-Chang Jin La-Sheng Long Xiao Cheng Zeng Rong-Bin Huang Lan-Sun Zheng

Ferroelectric materials are characterized by spontaneous electric polarization that can be reversed by inverting an external electric field. Owing to their unique properties, ferroelectric materials have found broad applications in microelectronics, computers, and transducers. Water molecules are dipolar and thus ferroelectric alignment of water molecules is conceivable when water freezes into ...

2014
Xian-Kui Wei Alexander K. Tagantsev Alexander Kvasov Krystian Roleder Chun-Lin Jia Nava Setter

Ferroelectric materials are heavily used in electro-mechanics and electronics. Inside the ferroelectric, domain walls separate regions in which the spontaneous polarization is differently oriented. Properties of ferroelectric domain walls can differ from those of the domains themselves, leading to new exploitable phenomena. Even more exciting is that a non-ferroelectric material may have domain...

2012
Duo Mao Bruce E. Gnade Manuel A. Quevedo-Lopez

The discovery of the piezoelectric properties of poly(vinylidene fluoride) (PVDF) by Kawai [Kawai, 1969], and the study of its pyroelectric and nonlinear optical properties [Bergman et al., 1971; Glass, 1971] led to the discovery of its ferroelectric properties in the early 1970s. Since that time, considerable development and progress have been made on both materials and devices based on PVDF. ...

2001
Klaus Dragosits

An approach to increase the capabilities of integrated circuit nonvolatile memory is to take advantage of the hysteresis in the polarization of ferroelectric materials. For a rigorous analysis of the resulting devices, a suitable model for the ferroelectric effects has been developed. We present this model and show the results of its implementation into a device simulator. Although this model w...

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