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首页> 外文期刊>Physica, B. Condensed Matter >Magnetostrictive properties of nanocrystalline CoNi ferrites
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Magnetostrictive properties of nanocrystalline CoNi ferrites

机译：纳米晶CoNi铁氧体的磁致伸缩性能

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Nanocrystalline CoNi samples were prepared using the co-precipitation technique. X-ray diffraction technique was used to check the phase purity of the samples. Surface morphology was studied using atomic force microscopy (AFM) and scanning electron microscopy (SEM) techniques. Nanosized grains of the samples were seen in AFM images of ultrasonicated powders. The nanocrystalline powders were shaped into pellets of desired size and used to record magnetostriction in the samples. The strain gauge method was used to record magnetostriction as a function of magnetic field in the range 010 kOe. The parallel and perpendicular magnetostrictions are of opposite signs. Maximum value of magnetostriction varies systematically with change in CoNi content. Magnetic hystersis (MH) curves were recorded using the VSM technique.
机译：使用共沉淀技术制备了纳米晶CoNi样品。使用X射线衍射技术检查样品的相纯度。使用原子力显微镜（AFM）和扫描电子显微镜（SEM）技术研究了表面形态。在超声粉末的AFM图像中可以看到样品的纳米颗粒。将纳米晶体粉末成形为所需尺寸的粒料，并用于记录样品中的磁致伸缩。应变仪方法被用来记录在010 kOe范围内的磁致伸缩与磁场的关系。平行和垂直磁致伸缩具有相反的符号。磁致伸缩的最大值随CoNi含量的变化而系统地变化。使用VSM技术记录磁滞（MH）曲线。

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