| 1. | State of art - s semiconductor crystal materials
族化合物半导体单晶材料发展动态 |
| 2. | Properties and processing technology of ge single crystal
锗金属单晶材料性能及加工技术研究 |
| 3. | Measuring methods for electrical parameters of silicon carbide single crystal material
碳化硅单晶材料电学参数测试方法 |
| 4. | The growth mechanisms and luminescence properties are discussed . an ordered si - c alloy was observed in the products resulting from thermal reduction of molybdenum disilicide heating rods
在硅钼棒的热解产物中发现了一种高碳浓度的si _ ( 1 - x ) c _ x单晶材料。 |
| 5. | We studied the factor that influence the quality of gaas , algaas and ingaas by mbe , and studied the growth temperature , growth time and the flux ratio of v - iii beam
研究了影响mbe生长gaas 、 algaas和ingaas等单晶材料质量的一些因素，对mbe生长温度、生长时间和生长时的-族束流比进行了研究。 |
| 6. | It ' s well known that silicon is a kind of classic brittle material at room temperature , meaning it is linear elastic until catastrophic fracture , and its fracture is not deterministically predictable
我们都知道，硅单晶材料在常温下的典型的脆性材料，其断裂的不可预知性和瞬间性导致它产生的破坏是巨大的。 |
| 7. | It was found that nitrogen increased the fracture strength of silicon single crystal . we consider that the nitrogen may change the shockley band on silicon surface and form complex to influence the fracture procedure
本文从硅材料的基本概念入手，阐述了硅单晶材料的脆性断裂、脆塑转变以及在热处理过程中的翘曲研究，并通过这三个部分进行实验。 |
| 8. | By high - temperature solution technique , the pmnt , pznt single crystals with perovskite structure were successfully prepared and the crystals showed size from 0 . 5mm to 5mm , and color from light yellow to brown . 2
采用高温熔液法成功地制备出钙钛矿相结构的pmnt 、 pznt单晶材料，制备的pmnt 、 pznt单晶颗粒大小多为0 . 5mm 5mm之间，晶粒呈淡黄色，少数呈灰褐色。 |
| 9. | The influences of the pre - stress on the working characteristic of the actuator are analyzed by the measurement of displacement . a numerical current source with alternative working mode and current range is manufactured to provide program - set steady current for the drive coil
单晶材料消除了晶界对畴壁移动的影响，具有很好的低场下的位移输出能力，这为微位移致动器的研制奠定了很好的基础。 |
| 10. | 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
新型弛豫铁电单晶铌镁酸铅(简称pmnt )或铌锌酸铅(简称pznt )是一类新兴的功能材料，其在准同型相界附近具有优于传统压电陶瓷的较高的压电常数和电致伸缩系数，可完全代替传统的压电陶瓷作为超声换能器、致动器、微位移器等，使其成为铁电领域的研究热点，但如何生长出满足应用要求的单晶材料却一直是一个困扰的问题。 |
