搜索

x
中国物理学会期刊

双钙钛矿Sr2CrWO6的磁性与输运性质研究

CSTR: 32037.14.aps.50.540

MAGNETIC AND TRANSPORT PROPERTIES IN THE DOUBLE PEROVSKITE Sr2CrWO6

CSTR: 32037.14.aps.50.540
PDF
导出引用
  • 研究了双钙钛矿Sr2CrWO6的磁性和输运性质.Sr2CrWO6多晶在Ar气及真空气氛中经固相烧结而形成.X射线衍射分析表明主相为Sr2CrWO6,少量杂相为SrWO4.热磁测量表明样品的居里温度为480K左右.电阻随温度降低而升高,类似于绝缘体,在外场5T,低温下(25K)磁致电阻(MR)可达20%,但MR随温度升高而趋于零.较大的矫顽力(5.97×1

     

    We have carried out preliminary investigations about the magnetic and transport properties of the double perovskite Sr2CrWO6. The polycrystalline sample was fabricated using solid-state reactions in an Ar atmosphere and evacuated silica capsules. The X-ray diffraction studies show that the sample is composed of Sr2CrWO6 and a small amount of impurity SrWO4. The Curie temperature, determined by the thermal magnetization measurements, is around 480 K. The electric resistivity increases with the drop of temperature and exhibits insulator behavior. A large intergrain magnetoresistance (MR) up to 20% at a low temperature (25 K) and a field of 5 T is observed. And the MR decreases to zero with increasing temperature toward 300 K. The large coercive force (5.97×104 A/m) and the low-field deviation of MR from high-field linear behavior indicate that there probably exists a large magnetic anisotropy in the compound.

     

    目录

    /

    返回文章
    返回