Barium titanate thick films prepared by screen printing technique
Апстракт
Pure and doped with lanthanum and antimony barium titanate (BaTiO3-BT, BTL and BTS) powders were prepared by the polymeric organometallic precursors method (Pechini process-PPM) starting from citrate solutions.
For the preparation of thick films was used screen printing technique. The paste was prepared from suspension of organic material (resin, organic solvent and additives to improve rheological behavior of paste) and barium titanate powders obtained by Pechini procedure, using a ratio 30:70. To get better adhesion between paste and substrate it was added a low temperature melting glass in powder form. The electrodes were prepared from the silver/palladium mixture (Ag/Pd – 70/30). The bottom electrode was deposited on the Al2O3 support and in the middle was screen-printed dielectric layer of (1) pure barium titanate, (2) barium titanate doped with 0.3 mol% La or (3) barium titanate doped with 0.3 mol% Sb. On the top was deposed the upper electrode. The layer-sandwich was sintered... at 850oC during 1h in air flow atmosphere.
Measurements of thickness and roughness of barium titanate thick films (BT, BTL and BTS) were performed as well as electrical measurements such as dielectric constant and dielectric losses vs. temperature. The value of dielectric constant was very low and the possible reason could be that the electrode material could diffuse from the surface of BT layer through intergranular pores and affect on changing the dielectric properties of films. This measurement also can point out that dopants may have the influence on dielectric constant. Dopants in this case are decreasing dielectric constant value. Measurement of hysteresis was also performed.
Кључне речи:
lanthanum and antimony barium titanate / screen printing technique / dielectric constant / Pechini procedure / electrical measurementsИзвор:
VIII students meeting, processing and Application of Ceramics, December 2-5, 2009, Novi Sad, Serbia, Programme and book of abstracts, p 56, 2009Издавач:
- Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia
Институција/група
Institut za multidisciplinarna istraživanjaTY - CONF AU - Vijatović Petrović, Mirjana AU - Bobić, Jelena AU - Stojanović, Biljana AU - Malič, Barbara PY - 2009 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2721 AB - Pure and doped with lanthanum and antimony barium titanate (BaTiO3-BT, BTL and BTS) powders were prepared by the polymeric organometallic precursors method (Pechini process-PPM) starting from citrate solutions. For the preparation of thick films was used screen printing technique. The paste was prepared from suspension of organic material (resin, organic solvent and additives to improve rheological behavior of paste) and barium titanate powders obtained by Pechini procedure, using a ratio 30:70. To get better adhesion between paste and substrate it was added a low temperature melting glass in powder form. The electrodes were prepared from the silver/palladium mixture (Ag/Pd – 70/30). The bottom electrode was deposited on the Al2O3 support and in the middle was screen-printed dielectric layer of (1) pure barium titanate, (2) barium titanate doped with 0.3 mol% La or (3) barium titanate doped with 0.3 mol% Sb. On the top was deposed the upper electrode. The layer-sandwich was sintered at 850oC during 1h in air flow atmosphere. Measurements of thickness and roughness of barium titanate thick films (BT, BTL and BTS) were performed as well as electrical measurements such as dielectric constant and dielectric losses vs. temperature. The value of dielectric constant was very low and the possible reason could be that the electrode material could diffuse from the surface of BT layer through intergranular pores and affect on changing the dielectric properties of films. This measurement also can point out that dopants may have the influence on dielectric constant. Dopants in this case are decreasing dielectric constant value. Measurement of hysteresis was also performed. PB - Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia C3 - VIII students meeting, processing and Application of Ceramics, December 2-5, 2009, Novi Sad, Serbia, Programme and book of abstracts, p 56 T1 - Barium titanate thick films prepared by screen printing technique UR - https://hdl.handle.net/21.15107/rcub_rimsi_2721 ER -
@conference{ author = "Vijatović Petrović, Mirjana and Bobić, Jelena and Stojanović, Biljana and Malič, Barbara", year = "2009", abstract = "Pure and doped with lanthanum and antimony barium titanate (BaTiO3-BT, BTL and BTS) powders were prepared by the polymeric organometallic precursors method (Pechini process-PPM) starting from citrate solutions. For the preparation of thick films was used screen printing technique. The paste was prepared from suspension of organic material (resin, organic solvent and additives to improve rheological behavior of paste) and barium titanate powders obtained by Pechini procedure, using a ratio 30:70. To get better adhesion between paste and substrate it was added a low temperature melting glass in powder form. The electrodes were prepared from the silver/palladium mixture (Ag/Pd – 70/30). The bottom electrode was deposited on the Al2O3 support and in the middle was screen-printed dielectric layer of (1) pure barium titanate, (2) barium titanate doped with 0.3 mol% La or (3) barium titanate doped with 0.3 mol% Sb. On the top was deposed the upper electrode. The layer-sandwich was sintered at 850oC during 1h in air flow atmosphere. Measurements of thickness and roughness of barium titanate thick films (BT, BTL and BTS) were performed as well as electrical measurements such as dielectric constant and dielectric losses vs. temperature. The value of dielectric constant was very low and the possible reason could be that the electrode material could diffuse from the surface of BT layer through intergranular pores and affect on changing the dielectric properties of films. This measurement also can point out that dopants may have the influence on dielectric constant. Dopants in this case are decreasing dielectric constant value. Measurement of hysteresis was also performed.", publisher = "Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia", journal = "VIII students meeting, processing and Application of Ceramics, December 2-5, 2009, Novi Sad, Serbia, Programme and book of abstracts, p 56", title = "Barium titanate thick films prepared by screen printing technique", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2721" }
Vijatović Petrović, M., Bobić, J., Stojanović, B.,& Malič, B.. (2009). Barium titanate thick films prepared by screen printing technique. in VIII students meeting, processing and Application of Ceramics, December 2-5, 2009, Novi Sad, Serbia, Programme and book of abstracts, p 56 Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia.. https://hdl.handle.net/21.15107/rcub_rimsi_2721
Vijatović Petrović M, Bobić J, Stojanović B, Malič B. Barium titanate thick films prepared by screen printing technique. in VIII students meeting, processing and Application of Ceramics, December 2-5, 2009, Novi Sad, Serbia, Programme and book of abstracts, p 56. 2009;. https://hdl.handle.net/21.15107/rcub_rimsi_2721 .
Vijatović Petrović, Mirjana, Bobić, Jelena, Stojanović, Biljana, Malič, Barbara, "Barium titanate thick films prepared by screen printing technique" in VIII students meeting, processing and Application of Ceramics, December 2-5, 2009, Novi Sad, Serbia, Programme and book of abstracts, p 56 (2009), https://hdl.handle.net/21.15107/rcub_rimsi_2721 .