ferroelectric materials 中文意思是什麼
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These results indicate that the phonon - pseudospin interaction should be taken into account for the physics properties in ferroelectric materials
因此在研究鐵電材料物理性質時聲子的作用是不可忽視的。 -
Relaxor ferroelectric single crystals, such as pb ( mg1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pmnt ) or pb ( zn1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pznt ), have been reported to exhibit an extremely large piezoelectric constant and excellent electrostrictive properties. such excellent performance makes it fully substitute the traditional piezoelectric ceramics and points to a revolution in ultrasonic transducers, actuators and micro - positioners, making relaxor - based piezocrystals the most promising materials for a broad range of advanced applications. however, it is difficult to grow the high quality single crystals because of the lack of valid thermodynamic data
新型弛豫鐵電單晶鈮鎂酸鉛（簡稱pmnt ）或鈮鋅酸鉛（簡稱pznt ）是一類新興的功能材料，其在準同型相界附近具有優于傳統壓電陶瓷的較高的壓電常數和電致伸縮系數，可完全代替傳統的壓電陶瓷作為超聲換能器、致動器、微位移器等，使其成為鐵電領域的研究熱點，但如何生長出滿足應用要求的單晶材料卻一直是一個困擾的問題。 -
Compared with bst materials, especially in thin films, ps t has smaller ferroelectric critical size, lower crystallization temperature, and compatible fabrication with si micro - electronics, so it can meet the need of the high quality si - based integrate circuit ( ic ). moreover, it is important to promote the development of the miniaturization and integration for the modern devices
與bst相比，特別作為薄膜材料， pst的鐵電臨界尺寸較小，晶化溫度較低，制備工藝與si微電子工藝兼容，更能夠滿足高性能的si基集成電路的需要，對推動現代器件發展的小型化和集成化具有十分重要的意義。 -
Thin films of ferroelectric materials can be developed to present very few losses and add no significant weight to the antenna structure. the permittivity of these materials changes with an applied dc voltage ; and this change can be used to control the resonant frequency of an antenna
將鐵電材料應用到天線的設計中，外加直流偏壓可以控制鐵電材料的介電常數，從而控制天線的諧振頻率，這樣就可以製作出可調諧天線。 -
Then a simple analytical formula is obtained, which expresses the constitutive relation between polarization p and loading electric field e of ferroelectric materials
由此推出一個簡單的解析表達式，表達了鐵電材料極化強度p與外電場e的本構關系。 -
We have developed the theory of boundary shielding approximation of electric polarization, from which the values of spontaneous polarization of some typical ferroelectric materials can be derived. the shielded charges in ferroelectricity are in the state of surface bound polaron - dipole whose creation and annihilation must span a potential barrier. by introducing statistical method, four types of typical electric hysteresis loops of some common crystals and ceramics have been given, which are well consistent with the experimental results
利用電極化的邊界屏蔽近似，可計算出一些典型鐵電單晶的自發極化強度.鐵電屏蔽電荷處于表面束縛極化子偶狀態，其產生和湮沒要跨越位壘.由統計方法給出的一些常見晶體和陶瓷的四種典型電滯回線形狀，和實驗觀察到的結果一致 -
Simulation for nonlinear electro - mechanical coupling of ferroelectric materials
鐵電材料非線性力電耦合特性的模擬計算 -
Nonlinear dielectric properties of pt p0 - 3 ferroelectric composite materials
復合物的非線性介電性質 -
This thesis presents the theoretical analysis about the design of the tunable antennas with multilayered structure theory and microstrip antenna ' s analytical methods. and it improves three typical kinds of antennas, and uses the voltage controlled ferroelectric materials. we analyze the tuning features of the antenna by simulation under the condition of different permittivity of the ferroelectric materials, and discuss the feasibility of improvement from microstrip antenna to tunable antenna
本文結合多層介質理論及微帶天線的分析方法對可調諧天線進行理論分析，並對矩形貼片天線、圓形貼片天線、微帶振子天線三種典型的微帶天線結構進行改進，引入壓控鐵電薄膜材料，模擬分析在改變鐵電薄膜介電常數條件下天線的調諧特性，討論微帶天線改進為可調諧天線的可行性。 -
Studies of non - stoichiometrical ferroelectric cathode materials
缺位型強電流鐵電陰極材料的研究 -
Study on morphotropic phase boundary of pb - based relaxor ferroelectric materials
弛豫鐵電材料的準同型相界研究 -
Ferroelectric materials, with the ferroelectric and piezoelectric characteristics, can be widely applied in many fields, such as information memory, communication, navigation, accurate measurement and machinery et al
鐵電材料由於具有鐵電特性和壓電特性而在信息儲存、通信、導航、精密測量、機械等眾多領域得到廣泛的應用。 -
Strong coupling between electrical and mechanical properties in ferroelectric materials and devices enable their widespread application. achieving the full potential of ferroelectric thin films necessitates fundamental knowledge of surface and interface properties of ferroelectric thin films on the nanoscale level
鐵電薄膜由於其特有的極化效應已在多個領域得到廣泛應用，因此有必要深入研究鐵電薄膜的表面及界面納米尺度的基礎特性。 -
The ferroelectric materials for their excellent dielectric, piezoelectric, ferroelectric, pyroelectric, electro - opticial, phonon - optic and nonlinear polarization properties have been widely applied in many fields especially in microwave tunable devices, such as phase shifter in phased array antenna, resonantor and filter etc. as far as microwave tunable dielectric materials, barium strontium titanate ( bst ) and its doped series have been investigated intensively, which have about 50 % tunability
鐵電材料具有優良的介電、壓電、鐵電、熱釋電、電光、聲光及非線性極化等特性，在多種領域有著廣泛的用途。利用其非線性極化特性能制備微波可調元器件，如相控陣天線上的移相器，諧振器，濾波器等。 -
This thesis reviewed the development of the microwave tunable ferroelectric thin film materials, summarized the application of sol - gel on the materials, and introduced the principle and application of the microwave tunability in brief
本文全面綜述了微波可調鐵電薄膜材料的研究發展，總結了溶膠凝膠技術在制備此類材料中的應用，簡要介紹了鐵電材料微波可調的基本原理及其應用。 -
Again, the cop of a ferroelectric ericsson refrigeration cycle is calculated in detail and the analytic expressions of the cop for some special dielectric materials which obey curie law, curie - weiss law and other laws are obtained. in chapter iii, the optimal performance of the regenerative ferromagnetic refrigeration cycles is studied
並對鐵電埃里克森製冷循環的性能系數進行了詳細的計算分析，導出滿足居里定律、居里-外斯定律和其它特殊關系的電介質的埃里克森製冷循環的性能系數的解析表達式。 -
Abstract : ferroelectric based nanocomposites are a new class of mesoscale functional materials which have a high dielectric constant and high electric field. recent progress in this research area is reviewed briefly, and a novel ferroelectric composite with embedded semiconductor quantum dots, including its preparation and optical properties, is reported. this material has promising applications in new electroluminescent devices and quantum dot lasers
文摘:鐵電體基納米復合材料作為一類新型功能材料，提供了一系列「高介-高場」調制的介觀系統.文章介紹了這一領域的最新研究進展，並重點報道了一類新型鐵電體基納米復合材料鐵電體半導體量子點復合材料的制備與光學性質，該材料在新型電致發光元件及量子點激光器件中有著很好的應用前景 -
The purpose of introducing ferroelectric polymeric pvdf material was to make use of the remanent polarization of ferroelectric materials and to study the effect of the internal field formed in the device during the device worked. the diodes were driven at constant voltage and were also kept under short - circuit or reverse - bias conditions
本文將具有特殊極化性能的鐵電高分子材料pvdf引入器件，目的在於利用其電場下其殘余極化特性，研究此種器件工作時形成的內電場情況及其對器件穩定性的影響。 -
The polarization mechanism of ferroelectric materials includes displacement polarization and turning - direction polarization
摘要鐵電材料的極化機制包括：位移極化，轉向極化。 -
Ferroelectric materials are not only vital electronic functional materials, but are thought of as the most interesting and promising intelligent materials of the future
鐵電材料不僅是重要的電子功能材料，而且被認為是最有應用前景的智能基礎材料。
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