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Preparation and functional characterization of magnetoelectric Ba(Ti1-xFex)O3-x/2 ceramics. Application for a miniaturized resonator antenna
Gheorghiu, Felicia1; Ciomaga, Cristina Elena2; Simenas, Mantas3; Airimioaei, Mirela4; Qiao, Shan5; Tascu, Sorin1; Kalendra, Vidmantas3; Banys, Juras3; Avadanei, Ovidiu G.4; Mitoseriu, Liliana4
2018
Source PublicationCeramics International
ISSN02728842
AbstractDiluted magnetic oxides attracted a great interest in the last years as materials for spintronics and magnetoelectric devices. We propose in the present paper such a magnetoelectric ceramic system for an application as miniaturized resonator antenna in GHz range. BaTi1-xFexO3-x/2 (0 ≤ x ≤ 0.02) polycrystalline ceramics have been produced by solid state reaction. X-ray diffraction analysis and Rietveld refinement have shown that Fe doping of BaTiO3 lattice produces a transition from tetragonal crystalline symmetry (for x ≤ 0.01) to a superposition of tetragonal and hexagonal phases for the compositions x = 0.015 and 0.02. As result of Fe addition, the Curie temperature of BaTi1-xFexO3-x/2 ceramics exhibit a shift from 127 °C towards lower values and reaches 85 °C for x = 0.02. A competition between weak ferromagnetic and antiferromagnetic character as a function of composition and temperature is determined both by the presence of transition metal ion and of the oxygen vacancies. Due to its electromagnetic properties, an optimized composition x = 0.01 was used for producing a miniaturized antenna which was found to show a frequency dependent S11 response similar to the simulated one. © 2018 Elsevier Ltd and Techna Group S.r.l.
DOI10.1016/j.ceramint.2018.08.091
PublisherElsevier Ltd
EI KeywordsMicrowave antennas
EI Classification Number531.1 Metallurgy - 545.1 Iron - 801 Chemistry - 802.2 Chemical Reactions - 812.1 Ceramics - 931.2 Physical Properties of Gases, Liquids and Solids - 933.1 Crystalline Solids
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25256
Collection中国科学院上海硅酸盐研究所
Affiliation1.Research Center on Advanced Materials and Technologies, Sciences Department, Alexandru Ioan Cuza University of Iasi, Blvd. Carol I, nr. 11, Iasi; 700506, Romania;
2.Research Department of Physics, Alexandru Ioan Cuza University of Iasi, Blvd. Carol I, nr. 11, Iasi; 700506, Romania;
3.Lab. of Microwave Spectroscopy, Radio Physics Department, Faculty of Physics, Vilnius University, Sauletekio av. 9, Vilnius; LT-10222, Lithuania;
4.Department of Physics, Alexandru Ioan Cuza University of Iasi, Blvd. Carol I, nr. 11, Iasi; 700506, Romania;
5.State key laboratory of functional materials for informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai; 200050, China
Recommended Citation
GB/T 7714
Gheorghiu, Felicia,Ciomaga, Cristina Elena,Simenas, Mantas,et al. Preparation and functional characterization of magnetoelectric Ba(Ti1-xFex)O3-x/2 ceramics. Application for a miniaturized resonator antenna[J]. Ceramics International,2018.
APA Gheorghiu, Felicia.,Ciomaga, Cristina Elena.,Simenas, Mantas.,Airimioaei, Mirela.,Qiao, Shan.,...&Mitoseriu, Liliana.(2018).Preparation and functional characterization of magnetoelectric Ba(Ti1-xFex)O3-x/2 ceramics. Application for a miniaturized resonator antenna.Ceramics International.
MLA Gheorghiu, Felicia,et al."Preparation and functional characterization of magnetoelectric Ba(Ti1-xFex)O3-x/2 ceramics. Application for a miniaturized resonator antenna".Ceramics International (2018).
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