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magnetostriction

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magnetostriction n.【物理學】磁致伸縮；磁力控制。

n. 【物理學】磁致伸縮；磁力控制。 “anisotropic magnetostriction“ 中文翻譯：   各向異性磁致伸縮“bulk magnetostriction“ 中文翻譯：   體積磁致伸縮“converse magnetostriction“ 中文翻譯：   逆磁致伸縮“cross magnetostriction“ 中文翻譯：   正交磁致伸縮“forced magnetostriction“ 中文翻譯：   強迫磁致伸縮; 強制磁致伸縮“isotropic magnetostriction“ 中文翻譯：   各向同性磁致伸縮“joule magnetostriction“ 中文翻譯：   正磁致伸縮“linear magnetostriction“ 中文翻譯：   線性磁伸縮“longitudinal magnetostriction“ 中文翻譯：   縱向磁致伸縮“magnetostriction alloy“ 中文翻譯：   磁致伸縮合金“magnetostriction apparatus“ 中文翻譯：   磁致伸縮儀器“magnetostriction compass“ 中文翻譯：   磁致伸縮羅盤“magnetostriction constant“ 中文翻譯：   磁致伸縮常數“magnetostriction cutter“ 中文翻譯：   磁致伸縮切割器“magnetostriction effect“ 中文翻譯：   磁致伸縮效能; 磁致伸縮效應“magnetostriction loudspeaker“ 中文翻譯：   磁致伸縮式揚聲器“magnetostriction measurement“ 中文翻譯：   磁致伸縮測量“magnetostriction oscillator“ 中文翻譯：   磁伸縮振蕩器; 磁致伸縮振蕩器“magnetostriction speaker“ 中文翻譯：   磁伸縮揚聲器“magnetostriction transducer“ 中文翻譯：   磁伸縮變能器; 磁致伸縮換能器; 磁致伸縮式換能器“magnetostriction type“ 中文翻譯：   磁致伸縮式“magnetostriction vibrator“ 中文翻譯：   磁致伸縮振動器“positive magnetostriction“ 中文翻譯：   正磁致伸縮“spontaneous magnetostriction“ 中文翻譯：   自發磁致伸縮“magnetostratigraphy“ 中文翻譯：   磁性地層學“magnetostratigraphic unit“ 中文翻譯：   地磁地層單位

magnetotelephone

The giant magnetostrictive material is a new functional material , which has high magnetostriction , which has high response velocity , high energy density , big output force . because of the choiceness properties of the gmm , many researchers of the world countries now have taken part in studying it . also its corresponding theory and applications studies are being researched 超磁致伸縮材料是( giantmagnetostrictivematerial ， gmm )一種新型的稀土功能材料，具有磁致伸縮應變大、響應速度快、能量密度高、輸出力大等顯著的特點，以其優異的性能和良好的應用前景而得到了世界各國研究者的廣泛關注，其相應的理論及應用研究正日益廣泛，相關的各種應用器件正被世界各地的研究者開發出來。

The total energy expression of the sample is build through analyzing its energy composition . according to the principle of the minimum energy , using the connection between stress and strain and the connection between magnetostriction and magnetism strain , an expression for the mean field parameter is derived 通過分析所研究試樣的能量組成，寫出了試樣總能量表達式；根據能量最小原理，利用應力、應變之間的關系和磁致伸縮系數、磁應變之間的關系，得到了分子場參數表達式。

As a new type of functional material which has been developed in recent years , rare earth - iron giant magnetostrictive materials has many advantages , such as large magnetostriction strain , high coupling coefficient , quick response , high energy density and so on , which make it have good application future in fields of precision driving and microdisplacement based on the new type of functional material , this paper uses new principles and approaches to study this kind of microdisplacement actuator and its precision driving system 稀土鐵系超磁致伸縮材料就是近年來發展起來的?種新型的功能材料，具有磁致伸縮應變大、機磁耦合系數高、響應速度快、能量密度高等優點，已在精密驅動及微位移執行器等領域顯示出良好的應用前景。本論文以這種新型的功能材料為基礎，以基于該類材料的微位移執行器及其精密驅動系統為研究對象，并采用一些新的原理和方法，為新型、高性能微位移執行器及其精密驅動系統的研究提供一個新的途徑與思路。

According to magnetic medium following the theories , such as ferromagnetics , electromagnetic field , electrodynamics and so on , and linking the characteristics of driving of giant magnetostrictive materials , a control model and driving approach , which one to one correspondence with magnetostriction , are founded . the theory analysis and experimental study demonstrate that the control accuracy of giant magnetostrictive materials can be effectively improved , if using this control model and control approach of giant magnetostriction materials on account of flux density 通過理論分析和實驗研究表明：這種基于磁感應強度的超磁致伸縮材料的控制模型和控制方法，可有效地提高超磁致伸縮材料的控制精度；研制了具有驅動磁場和微位移感知功能的磁場與位移感知型超磁致伸微位移執行器，并提出了適用于此種執行器的設計理論和方法。

The better magnetostriction of tbdyfe thin films was 120x 10 - 6 in 100ka / m and 240 x 10 - 6 in 330ka / m the research on the magnetostriction of smco / tbdyfe bilayer films indicated that smco thin films could improve the magnetostricion of tbdyfe thin films effectively through improving its saturation magnetization ms and susceptibility 退火熱處理和襯底粗糙度的降低有助于薄膜磁致伸縮性能的提高。對smco tbdyfe復合薄膜磁致伸縮特性的研究表明， smco薄膜的復合能提高磁致伸縮薄膜的磁化率和飽和磁化強度從而提高tbdyfe薄膜磁致伸縮性能。

According to the effective field expression which has been derived in former , the phenomenon that the tangential component of magnetic leakage field has maximum value and the normal component of magnetic leakage field acquires zero value at the stress concentration zone of positive magnetostriction ferromagnetism materials under the application of tensile stress and negative magnetostriction ferromagnetism materials under the application of compressive stress is explained theoretically through analyzing and discussing 根據所得到的地磁場中受力鐵磁性材料有效場表達式，通過分析討論，解釋了受拉力作用的正磁致伸縮鐵磁材料和受壓力作用的負磁致伸縮材料在應力集中處漏磁場切向分量出現最大值、同時法向分量為零值的現象。

The dependences of the magnetostriction of epoxy bonded smfe2 composites on binder content , model pressure and sample size were determined . the magnetostriction of samples is the maximum when the binder content is in a range of 4 % - 6 % , and it increases with increasing the model pressure from 16 mpa to 62 mpa 當粘結劑與磁粉的質量比在4 ： 100到6 ： 100之間，粘結smfe _ 2具有最佳的磁致伸縮性能；當模壓壓力小于62mpa時，隨著壓力的增大粘結smfe _ 2合金的磁致伸縮增大。

In this paper , the program of measure system for films “ magnetostriction was improved and the influence of tbdyfe thin films “ elastic modulus on measurement was also studied . the effects of annealing on the microstructure and magnetic performance of tbdyfe ihin films was researched 完善了薄膜磁致伸縮系數測量結果的處理程序，研究了磁致伸縮薄膜在外場作用下薄膜彈性模量的變化對磁致伸縮值的影響，使測量得到的數據可靠性提高，數據的處理結果更符合實際。

It indicates that these materials are optimum cadidate for application . the magnetostriction of terfenol - d was calculated based on the model of magnetic domain turning and the model of magnetic domain wall motion respectively . the experiment value is consistent with that of calculation in low magnetic fields 應用磁疇轉動模型和疇壁位移模型計算了terfenol - d的磁致伸縮，計算結果表明在低磁場下，應用疇壁位移模型得到的計算結果與實驗結果符合較好。

Starting with causing mechanism of magnetostriction , this paper analyses and discusses the relationship of physical properties of magnetic crystal , deduces thermodynamics equation of the properties of magnetic crystal , such as magnetism , thermal and elasticity 本論文從磁致伸縮現象的產生機理入手，對磁性晶體物理性質之間的關系進行分析和論述，并根據熱力學理論，給出了磁性晶體的磁、熱和彈性性質的熱力學方程。

The properties of smco tbdyfe films and smco / tbdyfe bilayer films prepared by d . c . magnetron sputtering were investigated in this paper . the purpose of the research was to find a way to improve the magnetostriction of tbdyfe films , especially in low magnetic field 本論文對磁控濺射制備的smco 、 tbdyfe 、 smco tbdyfe薄膜性質進行了研究，以期提高tbdyfe薄膜的磁致伸縮性能尤其是在低磁場下的磁致伸縮性能。

It was found that the sample density increases with the increasing compaction pressure , while the resistivity decrease with the increasing compaction pressure . the compaction pressure between 48mpa and 148mpa has a little effect on the magnetostriction 結果表明，密度隨成形壓力的增加而增加，電阻率則隨成形壓力的增加而減小，在48mpa 148mpa內，成形壓力對磁致伸縮性能的影響不大。

The static and dynamic properties , such as magnetostriction , hysteresis loop , dynamic strain coefficient and magnetomechanical coupling coefficient were measured with the magnetic measurement system of multiple parameters 測試了磁致伸縮材料靜態特性和動態特性，包括材料的磁致伸縮、磁滯回線、動態磁致伸縮系數、柔順系數、磁機械耦合系數等。

The large magnetostriction of 1186xlo “ 6 at 450ka / m for terfenol - d composite with the applied compressive stress of lompa and magnetostriction of 900x10 “ 6 at 900ka / m for pro . istbojdyo . ssfea composite are obtained 在磁致伸縮的測量中，預應力可大大提高粘結棒材的磁致伸縮，當預應力為10mpa時，粘結棒材在磁場為450ka m時達到1186ppm 。

The magnetostriction of bonded tb03dy07fe2 rod composites is 580x 10 “ 6 at a field of 200 ka / m , and the magneto - mechanical coupling coefficient is 0 . 40 at a bias field of 118 ka / m 相對而言制備工藝參數對合金的電阻率和抗壓強度影響較小，其電阻率等于熔煉法制備的材料的電阻率的10000倍左右，抗壓強度約為150mpa 。

The highest density and the low resistivity and the best magnetostriction in a composite rod were obtained when the proportion of binder to powders “ weight is 4 : 100 膠與磁性粉末的質量比為4 ： 100時，粘結體的密度最高，電阻率最低，磁致伸縮性能最佳。

The magnetostriction of 350ppm for the bonded composite with al as binder at 900ka / m is obtained 采用al作為粘結劑，得到了結構致密的粘結體，粘結體的軸向磁致伸縮達到350ppm 。

Magnetostriction and acoustics properties of tb1 - xdyx fe1 - ymny 1 . 95 alloys and application to sonar transducer 95合金的磁致伸縮和聲學性質及在水聲換能器中的應用

The magnetostriction decreases a little with the increment of the size for rod samples 對于棒狀粘結smfe _ 2合金材料，隨著樣品長度的增大其磁致伸縮有所減小。