Magnetic Properties of R-YIG (R = La, Nd, and Gd) Derived by a Sol-gel Method

被引：12
|
作者：
Uhm, Young Rang [1 ]
Lim, Jae Cheong [1 ]
Choi, Sang Mu [1 ]
Kim, Chul Sung [2 ]
机构：
[1] KAERI, Radioisotope Res Div, Daejeon 34057, South Korea
[2] Kookmin Univ, Dept Nanoelectro Phys, Seoul 02707, South Korea
来源：
JOURNAL OF MAGNETICS | 2016年 / 21卷 / 03期
关键词：
sol-gel method; Mossbauer spectroscopy; R-YIG; (R; La; Nd; and Gd); garnet structure; YTTRIUM-IRON-GARNET; NANOPARTICLES; MOSSBAUER;
D O I：
10.4283/JMAG.2016.21.3.303
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Y3-xRxFe5O12 (R = La, Nd, and Gd) powder were fabricated using a sol-gel pyrolysis method. Their magnetic properties and crystalline structures were investigated using x-ray diffraction (XRD), a vibrating sample magnetometer (VSM), and Mossbauer Spectrometer. The Mossbauer spectra for the powders were taken at various temperatures ranging from 12 K to Curie temperature (Tc). The isomer shifts indicated that the valence states of Fe ions for the 16(a) and 24(d) sites have a ferric character. The saturation magnetization (Ms) increases from 32 to 34 (emu/g) for the YIC, and Nd-YIG, respectively. However, Ms decreases to 27 (emu/g) at Gd-YIG.
引用
收藏
页码：303 / 307
页数：5
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