搜索

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Sm-Co-Ti三元系相关系及某些单相化合物的结构与磁性

王文全 王建立 唐宁 包富泉 吴光恒 杨伏明 金汉民

引用本文:
Citation:

Sm-Co-Ti三元系相关系及某些单相化合物的结构与磁性

王文全, 王建立, 唐宁, 包富泉, 吴光恒, 杨伏明, 金汉民

Sm-Co-Ti PHASE DIAGRAM AND STRUCTURAL AND MAGNETIC PROPERTIES OF SOME SINGLE-PHASE COMPOUNDS

WANG WEN-QUAN, WANG JIAN-LI, TANG NING, BAO FU-QUAN, WU GUANG-HENG, YANG FU-MING, JIN HAN-MIN
PDF
导出引用
  • 通过X射线衍射和磁性测量研究了Sm-Co-Ti三元体系富Co区固相线下的相关系,并探索了Co基3:29型化合物存在的可能性,进而研究了某些单相化合物的结构和磁性.实验表明,该体系中存在三个三元化合物SmCo7-xTix,Sm2Co17-xTix和SmCo12-xTix,其固溶区分别为0.32≤x≤0.54,0≤x≤1.13和1.45≤x≤1.95.按Sm9.31Co90-xTix(3≤x≤15)成分配料,Sm按其质量的15%,20%,25%三个比例过量加入,在1303—1403K温度范围内退火,均未发现3∶29相.在制备出的SmCo12-xTix,和Sm2Co17-xTix两个系列化合物中,随着Ti含量的增加,它们的居里温度和饱和磁化强度都单调降低.Sm2Co17-xTix化合物在居里温度以下表现为单轴各向异性,而SmCo12-xTix化合物表现为面各向异性.SmCo12-xTix和Sm2Co17-xTix化合物1.5K下的磁晶各向异性场随Ti含量的变化都呈现一个极大值,这可能与Ti原子的择优占位有关
    The phase diagram of Co-rich Sm-Co-Ti system was obtained by X-ray diffraction analysis and magnetic measurement. It was found that there exist three series of compounds, SmCo7-xTix, Sm2Co17-xTix and SmCo12-x Tix. The formation ranges for these three series are 0.32≤x≤0.54, 0≤x≤1.13 and 1.45≤x≤1.95, respectively. The 3∶29 phase was not found after annealing Sm9.31Co90-xTix (3≤x≤15) prepared with an excess Sm of 15%, 20% and 25% added, at temperatures ranging from 1303 to 1403 K. It was also found that the Curie temperatures TC and saturation magnetization Ms decrease with increasing Ti content for both SmCo12-xTix and Sm2Co17-xTix compounds. Below TC, the uniaxial and planar anisotropies were observed for Sm2Co17-xTix and SmCo12-xTix compounds, respectively. The anisotropy fields Ba measured at 1.5 K for both SmCo12-xTix and Sm2Co17-xTixcompounds as a function of Ti content x exhibits a peak at certain compositions, which is thought to be associated with the preferential substitution of Ti for Co.
    • 基金项目: 国家自然科学基金(批准号:58971061)资助的课题.
计量
  • 文章访问数:  6803
  • PDF下载量:  537
  • 被引次数: 0
出版历程
  • 收稿日期:  2000-09-18
  • 修回日期:  2000-11-10
  • 刊出日期:  2001-02-05

/

返回文章
返回