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首页> 外文期刊>Magnetics, IEEE Transactions on >Phase Structure and Magnetic Properties of Mn70Ga30–xSnx (–30) Alloy Ribbons
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Phase Structure and Magnetic Properties of Mn70Ga30–xSnx (–30) Alloy Ribbons

机译:Mn 70 Ga 30– x Sn x 的相结构和磁性–30)合金色带

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摘要

The effects of Sn substitution for Ga on phase structure and magnetic properties of Mn GaSn (–30) alloy ribbons prepared by melt-spinning and subsequently annealing at 773 K for 1 h have been investigated by means of X-ray diffraction and magnetization measurements. All the annealed samples consist of more or less Mn (Ga, Sn), D0-Mn (Ga, Sn), and D0-Mn (Ga, Sn) phases. The Curie temperature for the ferrimagnetic (FI) to paramagnetic transition of the Mn (Ga, Sn) phase varies from 175 K () to 244 K (), whereas the Néel temperature of D0-Mn (Ga, Sn) phase decreases from 450 to 405 K. The hard magnetic properties of the samples are found to be very sensitive to alloy compositions and measurement temperatures. The optimized coercivity and saturation magnetization for the samples at room temperature are 7.8 kOe and 19.8 emu/g, respectively. The relatively low magnetization is attributed to the existence of FI phase of NiIn and D0 structure and antiferromagnetic phase of D0 structure in our samples.
机译:通过X射线衍射和磁化测量,研究了用Sn替代Ga对通过熔融纺丝并随后在773 K退火1 h制备的Mn GaSn(–30)合金薄带的相结构和磁性能的影响。所有退火样品都由或多或少的Mn(Ga,Sn),D0-Mn(Ga,Sn)和D0-Mn(Ga,Sn)相组成。 Mn(Ga,Sn)相从亚铁磁(FI)到顺磁转变的居里温度从175 K()变为244 K(),而D0-Mn(Ga,Sn)相的Néel温度从450降低至405K。发现样品的硬磁性能对合金成分和测量温度非常敏感。室温下样品的最佳矫顽力和饱和磁化强度分别为7.8 kOe和19.8 emu / g。相对较低的磁化强度归因于我们样品中NiIn和D0结构的FI相以及D0结构的反铁磁相的存在。

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