Preparation and structural characterization of Fe-doped BaTiO3 diluted magnetic ceramics

被引：20

作者：

Gheorghiu, Felicia ^{[1
]}

Simenas, Mantas ^{[2
]}

Ciomaga, Cristina Elena ^{[3
]}

Airimioaei, Mirela ^{[4
]}

Kalendra, Vidmantas ^{[2
]}

Banys, Juras ^{[2
]}

Dobromir, Marius ^{[3
]}

Tascu, Sorin ^{[1
]}

Mitoseriu, Liliana ^{[4
]}

机构：

[1] Alexandru Ioan Cuza Univ, Dept Sci, Res Ctr Adv Mat & Technol, Blvd Carol I,11, Iasi 700506, Romania

[2] Vilnius Univ, Fac Phys, Radio Phys Dept, Lab Microwave Spect, Sauletekio Ave 9, LT-10222 Vilnius, Lithuania

[3] Alexandru Ioan Cuza Univ, Fac Phys, Res Dept, Blvd Carol I,11, Iasi 700506, Romania

[4] Alexandru Ioan Cuza Univ, Fac Phys, Dielect Ferroelect & Multiferro Grp, Blvd Carol I,11, Iasi 700506, Romania

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 13期

关键词：

BaTi1-xFexO3-x/2; Dilute magnetic ceramics; Tetragonal phase; Microstructure; EPR spectra; XPS technique; BARIUM-TITANATE; PROGRESS;

D O I：

10.1016/j.ceramint.2017.05.013

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Fe-doped BaTiO3 ceramics produced from powders prepared by solid state reaction at various processing parameters (temperature, time) were investigated and discussed. X-ray diffraction analysis confirmed the existence of the tetragonal phase in BaTi1-xFexO3-x/2 (x=0.005) ceramics. The microstructural characterization reveals that a low calcination temperature leads to a higher densification of the bulk samples at around 96% relative density with average grain sizes similar to 6 gm. The oxidation state of the metal ions in the sintered samples analysed by means of X-ray photoelectron spectroscopy showed the presence of Ti(4+)2p(3/2) and Ti(4+)2p(1/2) peaks in Fe-doped BaTiO3 and the lack of Ti3+ ions, which confirms the compositional quality of these ceramics. The electron paramagnetic resonance measurements proved the incorporation of Fe ions as Fe3+ in the BaTiO3 lattice.

引用

页码：9998 / 10005

页数：8

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