Structural, magneto-optical properties and cation distribution of SrBixLaxYxFe12-3xO19 (0.0 ≤ x ≤ 0.33) hexaferrites

被引：71
作者：
Auwal, I. A. [1 ]
Gungunes, H. [2 ]
Guner, S. [3 ]
Shirsath, Sagar E. [4 ]
Sertkol, M. [5 ]
Baykal, A. [1 ]
机构：
[1] Fatih Univ, Dept Chem, TR-34500 Istanbul, Turkey
[2] Hitit Univ, Dept Phys, TR-19030 Cevre Yolu Bulvari, Corum, Turkey
[3] Fatih Univ, Dept Phys, TR-34500 Istanbul, Turkey
[4] Shinshu Univ, Fac Engn, Spin Device Technol Ctr, Nagano 3808553, Japan
[5] Istanbul Tech Univ, Dept Engn Phys, TR-34469 Maslak, Turkey
来源：
MATERIALS RESEARCH BULLETIN | 2016年 / 80卷
关键词：
Magnetic materials; Chemical synthesis; Mossbauer spectroscopy; Magnetic properties; Optical properties; MICROWAVE-ABSORPTION PROPERTIES; MAGNETIC-PROPERTIES; HIGH COERCIVITY; DOPED BARIUM; MOSSBAUER; SRFE12O19; NANOPARTICLES; PARTICLES; LA; COPRECIPITATION;
D O I：
10.1016/j.materresbull.2016.03.028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
SrBixLaxYxFe12-3xO19 (0.0 <= x <= 0.33) hexaferrites were produced via sol-gel auto combustion. XRD patterns show that all the samples are single-phase M-type strontium hexaferrite (SrM). The magnetic hysteresis (sigma-H) loops revealed the ferromagnetic nature of nanoparticles (NPs). The coercive field decreases from 4740 Oe to 2720 Oe with increasing ion content. In particular, SrBixLaxYxFe12-3xO19 NPs with x=0.0, 0.1, 0.2 have suitable magnetic characteristics (sigma(s) = 62.03-64.72 emu/g and H-c = 3105-4740 Oe) for magnetic recording. The intrinsic coercivity (H-ci) above 15000 Oe reveals that all samples are magnetically hard materials. Tauc plots were used to specify the direct optical energy band gap (E-g) of NPs. The E-g values are between 1.76 eV and 1.85 eV. Fe-57 Mossbauer spectroscopy data, the variation in line width, isomer shift, quadrupole splitting, relative area and hyperfine magnetic field values on Bi3+ La3+ and Y3+ substitutions have been determined. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：263 / 272
页数：10
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