Ferroelectricity in Doped Hafnium Oxide - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Ferroelectricity in Doped Hafnium Oxide write by Uwe Schroeder. This book was released on 2019-03-27. Ferroelectricity in Doped Hafnium Oxide available in PDF, EPUB and Kindle. Ferroelectricity in Doped Hafnium Oxide: Materials, Properties and Devices covers all aspects relating to the structural and electrical properties of HfO2 and its implementation into semiconductor devices, including a comparison to standard ferroelectric materials. The ferroelectric and field-induced ferroelectric properties of HfO2-based films are considered promising for various applications, including non-volatile memories, negative capacitance field-effect-transistors, energy storage, harvesting, and solid-state cooling. Fundamentals of ferroelectric and piezoelectric properties, HfO2 processes, and the impact of dopants on ferroelectric properties are also extensively discussed in the book, along with phase transition, switching kinetics, epitaxial growth, thickness scaling, and more. Additional chapters consider the modeling of ferroelectric phase transformation, structural characterization, and the differences and similarities between HFO2 and standard ferroelectric materials. Finally, HfO2 based devices are summarized. Explores all aspects of the structural and electrical properties of HfO2, including processes, modelling and implementation into semiconductor devices Considers potential applications including FeCaps, FeFETs, NCFETs, FTJs and more Provides comparison of an emerging ferroelectric material to conventional ferroelectric materials with insights to the problems of downscaling that conventional ferroelectrics face
Ferroelectricity in Doped Hafnium Oxide
Ferroelectricity in Doped Hafnium Oxide - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Ferroelectricity in Doped Hafnium Oxide write by Uwe Schroeder. This book was released on 2019-03-29. Ferroelectricity in Doped Hafnium Oxide available in PDF, EPUB and Kindle. Ferroelectricity in Doped Hafnium Oxide: Materials, Properties and Devices covers all aspects relating to the structural and electrical properties of HfO2 and its implementation into semiconductor devices, including a comparison to standard ferroelectric materials. The ferroelectric and field-induced ferroelectric properties of HfO2-based films are considered promising for various applications, including non-volatile memories, negative capacitance field-effect-transistors, energy storage, harvesting, and solid-state cooling. Fundamentals of ferroelectric and piezoelectric properties, HfO2 processes, and the impact of dopants on ferroelectric properties are also extensively discussed in the book, along with phase transition, switching kinetics, epitaxial growth, thickness scaling, and more. Additional chapters consider the modeling of ferroelectric phase transformation, structural characterization, and the differences and similarities between HFO2 and standard ferroelectric materials. Finally, HfO2 based devices are summarized.
Formation of Ferroelectricity in Hafnium Oxide Based Thin Films
Formation of Ferroelectricity in Hafnium Oxide Based Thin Films - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Formation of Ferroelectricity in Hafnium Oxide Based Thin Films write by Tony Schenk. This book was released on 2017-03-15. Formation of Ferroelectricity in Hafnium Oxide Based Thin Films available in PDF, EPUB and Kindle. In 2011, Böscke et al. reported the unexpected discovery of ferroelectric properties in hafnia based thin films, which has since initiated many further studies and revitalized research on the topic of ferroelectric memories. In spite of many efforts, the unveiling of the fundamentals behind this surprising discovery has proven rather challenging. In this work, the originally claimed Pca21 phase is experimentally proven to be the root of the ferroelectric properties and the nature of this ferroelectricity is classified in the frame of existing concepts of ferroelectric materials. Parameters to stabilize this polar phase are examined from a theoretical and fabrication point of view. With these very basic questions addressed, the application relevant electric field cycling behavior is studied. The results of first-order reversal curves, impedance spectroscopy, scanning transmission electron microscopy and piezoresponse force microscopy significantly advance the understanding of structural mechanisms underlying wake-up, fatigue and the novel phenomenon of split-up/merging of transient current peaks. The impact of field cycling behavior on applications like ferroelectric memories is highlighted and routes to optimize it are derived. These findings help to pave the road for a successful commercialization of hafnia based ferroelectrics.
Zirconium-doped Hafnium Oxide Based Ferroelectric Materials for Memory Applications
Zirconium-doped Hafnium Oxide Based Ferroelectric Materials for Memory Applications - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Zirconium-doped Hafnium Oxide Based Ferroelectric Materials for Memory Applications write by Fei Huang (Researcher in electrical engineering). This book was released on 2023. Zirconium-doped Hafnium Oxide Based Ferroelectric Materials for Memory Applications available in PDF, EPUB and Kindle. As data processing and storage needs continue to grow at a rapid pace, the development of innovative memory technologies is crucial. The discovery of ferroelectricity in hafnia (HfO2)-based materials has garnered significant attention in both academia and industry, owing to their potential to revolutionize non-volatile memory (NVM) technology and enable novel computing architectures. HfO2-based ferroelectric materials offer advantages over conventional perovskite oxides, such as low-temperature synthesis and conformal growth in three-dimensional structures on silicon, making them compatible with complementary metal-oxide-semiconductor (CMOS) technology and ideal for device scaling. However, several challenges still exist for implementing ferroelectric HfO2 in commercial products, such as polarization variation during cycling (wake-up effect), high operation voltage, compatibility with back-end-of-line (BEOL) processing temperatures, and low memory density. In this dissertation, I tackled the challenges outlined above. I began by focusing on the Hf0.5Zr0.5O2 (HZO) material itself and addressing the wake-up effect through the introduction of an HfO2 buffer layer at the HZO/electrode interface. Subsequently, I developed a new measurement setup capable of directly measuring individual nm-sized devices, which enabled investigating the scaling effect in HZO-based ferroelectric capacitors. Through my research, I was able to demonstrate excellent ferroelectricity and reliability in ultra-thin HZO (4 nm) capacitors with molybdenum (Mo) electrodes. These capacitors exhibited low operation voltage, wake-up-free behavior, high endurance, and low RTA temperatures, making them highly desirable for practical applications. I also studied the size scaling effect down to 65 nm × 45 nm devices, where I observed ultra-high remanent polarization (2Pr) for the first time at this scale. In addition to exploring two-dimensional scaling to improve density, I also proposed a hybrid structure for 4 bits/cell storage, increasing the multi-bit capability in a single cell.
Principles and Applications of Ferroelectrics and Related Materials
Principles and Applications of Ferroelectrics and Related Materials - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Principles and Applications of Ferroelectrics and Related Materials write by M. E. Lines. This book was released on 2001-02. Principles and Applications of Ferroelectrics and Related Materials available in PDF, EPUB and Kindle. This is a standard work on ferroelectrics.
