鐵電疇 的英文怎麼說
中文拼音 [tiědiànchóu]
鐵電疇
英文
ferroelectric domains-
The dissipative attenuation mechanism of the mn - zn ferrite that involved the natural resonance, the piezoelectric resonance and the magnetic hysteresis loss are also studied
本文還分析了錳鋅鐵氧體自然共振、磁滯損耗和疇壁共振等磁極化機制衰減吸收電磁波的各種機理。There are many methods to investigate domains, such as polarization microscopy, scanning electron microscopy, transmission electron microscopy, scanning electron acoustic microscopy and so on. however, these methods suffer from some serious disadvantages involving complex sample preparation, damage to sample, low resolution
現有的鐵電疇檢測手段,如偏光顯微鏡、粉末花樣技術、掃描電鏡、透射電鏡、掃描電子聲顯微鏡等存在這樣或那樣的缺點:諸如制樣繁瑣、易破壞原始疇結構、或疇結構成像解析度還不夠高等。This paper studies the investigation methods of domain using voltage - modulated sfm
本文利用電壓調制sfm研究鐵電疇的檢測方法。Investigation of domain and pyroelectric properties of lanthanum - doped lead titanate ferroelectric thin films
摻鑭鈦酸鉛鐵電薄膜的電疇與熱釋電性能研究The ferroelectrics polycrystal consists of a set of bonded crystal and each crystal comprises a set of distinct domain under mesoscale
鐵電體由緊密相連的單晶組成,細觀尺度上鐵電體的單晶具有電疇結構。The work provides not only the foundation of studying domain structure in ferroelectric thin films but also the means of studying fatigue and polarization retention in ferroelctrics
採用改裝的直流電源成功地對樣品進行了反轉,並利用pfm研究了鐵電疇的極化反轉。Domain structure and its movement determine the physical properties of ferroelectrics. investigation of domains is the precondition to study macroscopic properties of ferroelectrics
鐵電疇的結構及其運動規律直接決定了鐵電體的物理性質及其應用方向,電疇的檢測是進行鐵電特性研究的前提條件。_ based on the domain switching behavior of ferroelectrics, a model of " successive switching " for ferroelectric domains is introduced. this may help to avoid some of the intrinsic limitations of the " complete switching " hypothesis, and be a more physical representation
其工作包括: ? ?在分析鐵電材料電疇翻轉基本特徵的基礎上,引入電疇的「連續翻轉」模型,克服了「完全反轉」假設對鐵電特性描述的局限性,使電疇翻轉模型的物理意義更為明確。_ incremental form of evolution law of domain switching is developed by taking the volume fraction of domains as key intrinsic factors. the main factors that have great influence on domain switching are material parameters, domain wall motion, domain volume fraction and the interaction energy between inclusion and matrix. inclusion and its neighbors could be addressed in the description as well
? ?建立了以電疇翻轉時的體積分數增量為中心的,基於鐵電疇壁運動特性的剩餘應變及電位移的增量形式的演化方程,在其中包含有材料參數、疇壁運動、電疇形式、電疇體積分數及基體與夾雜、夾雜與夾雜等相互間能量作用等影響因素。The metal magnetic memory testing is a new technology which is special diagnose ferromagnetism materials with applied stress in earlier, and is belong to electromagnetic non - destructive testing ( ndt ). so the fundamental theory of ferromagnetics and the mechanics property and the electromagnetism property of metal is the theoretical foundation, some knowledge connected to them are summarized in this dissertation
磁記憶無損檢測技術是專門針對受力鐵磁性材料實施早期診斷的新型無損檢測技術,其檢測的范疇還是屬于電磁方法檢測,因此有關鐵磁學的基本理論、金屬的力學特性以及電磁特性等是研究磁記憶無損檢測的理論基礎,本論文針對有關這方面的一些基本知識作了簡要的總結。The experiments showed us : firstly, mediums with different magnetic and dielectric properties had different influence on the microwave - absorbing properties of spinel ferrite ; secondly, magnetic texture treatment greatly affected the microwave - absorbing properties of the spinel ferrite - based mixed material which contained single - domain particles of hexagonal ferrite, changing the matching thickness, the density of area and the position of absorption peaks and increasing the absorption quantity and the 10db bandwidth ; thirdly, the coupling effect between different layers affected the microwave - absorbing properties of the double - layer spinel ferrite - based mixed material, decreasing its matching thickness and density of area and increasing the position of absorption peaks
實驗發現: ( 1 )不同磁性與電性的介質對尖晶石型鐵氧體吸波特性的影響不同; ( 2 )磁織構化處理對含有六角晶系鐵氧體單疇顆粒的尖晶石型鐵氧體基混合吸波材料的性能影響很大,可以改變匹配厚度、面密度與吸收峰峰位,提高吸收量與10db帶寬; ( 3 )對于雙層材料,層間耦合作用會影響其吸波性能,降低匹配厚度與面密度,提高吸收峰峰位。Influence of thermal effect on domain turning of ferroelectrics under cycle - electric field
循環電載下熱效應對鐵電材料疇變的影響Accordingly, a new framework, which provides a common scheme for the numerical simulation on the macroscopic behavior of ferroelectrics though multi - scale analysis on the coupled thermo - electrics - mechanical behavior of multiphase in heterogeneous material, is induced to construct the effective constitutive equation of multiphase. in chapter four, based on the law of domain nucleation and domain wall motion of 1800 domain switching, a new scheme of domain switching and numerical simulation approach is put forward on the foundation of thermodynamics. driving traction, nucleation criterion, velocity of domain wall motion, kinetic relation and rate of domain switching in a single grain are given
第四章以鐵電體1800疇變的過程中形核規律和疇界運動規律的實驗觀察結果為基礎,根據熱力學理論建立鐵電體疇變的理論框架和數值模擬方法;給出了單疇內疇變驅動力、新疇形核準則、疇界運動速度公式、疇變動力學的表達式,單晶的疇變速率公式;用細觀力學的觀點給出了對多晶鐵電體多場耦合的有效性質進行包含疇變速率影響的多尺度分析方法。The rate of domain switching plays an important role in the nonlinear behavior and properties that are frequency dependent. it is necessary to incorporate the rate of domain switching when multi - scale analysis of the coupled macroscopic thermo - electric - mechanical behavior of ferroelectrics is carried out
疇變具有一定速度,疇變速率對鐵電體的非線性響應和頻率相關響應等性質起到重要的作用。在對鐵電體多場耦合進行多尺度分析時,必須考慮疇變速率的影響。With each domain being looked as distinct material phases and ferroelectrics polycrystal as multiphase material, the coupled macroscopic thermo - electric - mechanical behavior of polycrystalline ferroelectrics can be induced by multi - scale analyze. in response to the applied stimuli, domain can switch and domain switching coverts one variant into another
將鐵電體作為非均勻材料,將電疇看作不同的材料相,鐵電體宏觀尺度的力、電、熱多類場的耦合行為,可以通過對其進行多尺度分析得到。It was proposed that the reduction in pr ( n ) during the electric fatigue process was probably caused by the increase of a domain and anti - ferroelectric c * domain ( both leading to the increase in non - switching of c domain ) in combining with the experimental observation that the pr ( n ) values lowered with the rise of n. the equation which can be used to calculate the differences in non - switchable domain due to the increase of n was also given. variations of domain - switching with changes of n are discussed according to the in - situ xrd measurements
根據原位xrd實驗觀測結果,給出了c a疇的90疇變的近似估算公式,並結合宏觀剩餘極化強度隨n增加而降低的實驗觀測,提出了疲勞過程中材料的剩餘極化強度p _ r ( n )降低是由於a疇的增加和反鐵電c ~ *疇增加導致不可翻轉c疇增加共同造成的假設,並給出了不可翻轉疇隨n增加而變化的估算公式。_ the phenomenon of saturation or " lock up " when all of the grains have transformed, is described in a rattier simple form through domain volume fractions by the proposed model, in which domain switching in ferro - electrics is analogous to that of dislocation movement on crystal slip planes in metals
? ?依據晶體塑性理論,將鐵電材料中的電疇翻轉類比于晶體位錯滑移面上的滑移系,定義鐵電材料中相應的電疇反轉系;採用電疇的體積分數表述電疇翻轉的變化量,得到了電疇翻轉的飽和特性的簡單描述。Homogenization techniques in multi - scale analysis, the description of domain switching and the effect that the rate of domain switching has on the macroscopic behavior of ferroelectrics are the main subjects discussed in this paper
跨尺度分析中多相材料的均勻化理論、鐵電體疇變描寫和疇變速率對鐵電體宏觀行為的影響是本文主要討論的問題。Study of nanoscale banded 90 176 ; domain patterns and pyroelectric properties in oriented pb, la tio3 thin films
3鐵電薄膜中90 176 ;納米帶狀疇與熱釋電性能的研究分享友人