首页> 外文OA文献 >Crystal growth of Bi-2201 phase in high magnetic fields
【2h】

Crystal growth of Bi-2201 phase in high magnetic fields

机译:Bi-2201相在强磁场中的晶体生长

摘要

The crystal growth of Bi-2201 phase during partial-melting and solidification in high magnetic fields was reported. Thin crystals (~20 µm) with a size of 5-10 mm2 exist only in the surface layers of samples treated in zero magnetic field. Whereas thick crystals (~100 µm) exist not only on the surface, but also in the center of samples treated in 8 T magnetic field. Tc of Bi-2201 phase treated in 0 T is higher than that treated in 8 T. Bi-2201 phase and Bi-2212 phase coexist in the sample treated in 0 T, whereas only Bi-2201 phase exists in the sample treated in 8 T. For the sample treated in 8 T magnetic field, a clear second peak structure was observed in the magnetic hysteresis loop in the direction Hm//Ha at 5 K, and the width of the hysteresis loop ΔM at 5 K and 0 T in the direction Hm//Ha is about ten times as large as that in the direction Hm⊥Ha, indicating that for this sample an obvious anisotropy exists and the Bi-2201 grains align with their c axes parallel to Ha.
机译:报道了Bi-2201相在高磁场下部分熔融和凝固过程中的晶体生长。仅在经过零磁场处理的样品的表层中存在尺寸为5-10 mm2的薄晶体(〜20 µm)。而厚的晶体(〜100 µm)不仅存在于表面,而且存在于经8 T磁场处理的样品的中心。 0 T处理的Bi-2201相的Tc高于8 T处理的Bi。Bi-2201相和Bi-2212相在0 T处理的样品中共存,而Bi-2201相仅存在于8 T处理的样品中。对于在8 T磁场中处理过的样品,在5 K时在磁滞回线中沿Hm // Ha方向观察到清晰的第二峰结构,磁滞回线的宽度ΔMalt 5 K和0 T在Hm // Ha方向大约是Hm⊥Ha方向的十倍,这表明该样品存在明显的各向异性,Bi-2201晶粒的c轴与Ha平行。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号