Equilibrium Conductivity for Er Doped BaTiO3

Takada, K.; Ishiguro, Hiroshi; Smyth, D. M.

doi:10.7567/jjaps.26s2.42

Cited by 10 publications

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“…Thus, it is considered that the site occupancy of REEs is affected by the stoichiometry and the solubility limit of the REEs. 27) Itoh et al 28) directly determined the solubility limit of Ho in BaTiO 3 by using an ion implantation technique. The solubility limit of Ho was determined to be 2 Â 10 19 /cm 3 , and its concentration was much lower than that of the MLCC composition.…”

Section: Introductionmentioning

confidence: 99%

Oxygen Diffusion Phenomena and Hydrogen Incorporation in Reducing BaTiO₃ Ceramics Doped with Ho below Solubility Limit

Sakaguchi

Watanabe

Hishita

et al. 2012

Jpn. J. Appl. Phys.

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Oxygen diffusion phenomena in BaTiO3 ceramics doped with Ho of 5.2 ×1018/cm3 were studied in order to reveal the effect of reduction thermal annealing. The samples were reduced at 850 °C in a 3% H2–Ar atmosphere before the oxygen diffusion experiments. The oxygen diffusion was carried out in the temperature range of 700–800 °C. The measurement of diffusion profiles and ion images revealed the oxygen defect distribution caused by the annealing. The results show that the grain boundary acts as a layer blocking oxygen diffusion when the diffusion temperature is below the reduction temperature of 850 °C.

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Section: Introductionmentioning

confidence: 99%

Oxygen Diffusion Phenomena and Hydrogen Incorporation in Reducing BaTiO₃ Ceramics Doped with Ho below Solubility Limit

Sakaguchi

Watanabe

Hishita

et al. 2012

Jpn. J. Appl. Phys.

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“…The initially low insulation resistance can be effectively suppressed by acceptor doping of BME materials. 6 Numerous "off-valence" ions on Ti-sites 7-10 like Mn 2ϩ , Fe 3ϩ , and Ca 2ϩ and certain "amphoteric" [11][12][13][14] rare-earth ions like Y 3ϩ (Ti) , 15…”

Section: Introductionmentioning

confidence: 99%

Kinetic Process of Reoxidation of Base Metal Technology BaTiO₃‐Based Multilayer Capacitors

Opitz

Albertsen

Beeson

et al. 2003

Journal of the American Ceramic Society

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Base metal technology, mainly using Ni electrodes in multilayer ceramic capacitors (MLCCs), is now well established. This technology requires a so‐called reoxidation treatment after sintering the MLCCs in a reducing atmosphere to guarantee a sufficient electrical reliability. Large numbers of electrodes, and production of physically larger components for high‐voltage components, are two technological trends that make the control of the reoxidation process rather difficult. The reoxidation process has been studied to determine oxygen diffusion pathways into commercial MLCCs, using 18O tracer diffusion and finite element calculations. In MLCCs oxygen diffusion mainly occurs along the Ni electrodes. Furthermore, the reoxidation process is mostly controlled by the thermodynamic potential of the Ni/NiO equilibrium in the interior of the capacitor, but it is the short circuit diffusion along the interface of the electrode that controls the kinetics of the oxygen transport into the interior of the capacitor device.

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“…According to the study of Zulueta et al[22] and Tsur et al, Er 3+ ions can found in both A-sites and B-sites (i.e. amphoteric effect), but basing on other previous studies Er 3+ and Yb 3+ ions would occupy B-site to improve the stability of BTO at this location[23] [24] [25][26]. In the present work we study the substitution of RE 3+ ions of Er 3+ and Yb 3+ in Ti-site (B-site) of BTSO nano-structure perovskite, the used concentration chemical formula are listed in Table1.…”

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confidence: 99%

Er3+ and Er3+/Yb3+ Ions Embedded in Nano-Structure BaTi0.9Sn0.1O3: Structure, Morphology and Dielectric Properties

Sayed¹,

Battisha²,

Lahmar³

et al. 2021

WJNSE

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Barium titanate tin oxides BaTi 0.9 Sn 0.1 O 3 referred to as (BTSO) doped with 0.5Er 3+ and co-doped with (0.75 and 1) Yb 3+ ions, were prepared using a modified sol-gel method and calcinated at 1050˚C in the air for 4 h. The influence of the selected rare earth element on the structure morphology, dielectric properties behavior was investigated. From TEM micrographs, it has appeared that the particles have a spherical shape with a small size in nanoscale. The average particle size is determined both by TEM and XRD diffraction was found to be in agreement and within the range between 45.9 and 57.7 nm. The effects of Lanthanide incorporation on the evolution of these nano-crystalline structures were followed by XRD and (FTIR). The XRD patterns give rise to a single perovskite phase, while the tetragonality was found to decrease gradually with Er 3+ and Er 3+ /Yb 3+ ions, respectively. FTIR results showed enhancement of the crystallinity and the absence of carbonates upon increasing Yb 3+ ions concentration from 0.75 up to 1 mol%. The dielectric and conductivity properties were found to be enhanced by the nature and the concentration of the lanthanide element (Er 3+ , Yb 3+ ) in the BTSO host lattice. The Curie temperature (T c ) shifted to a lower value from 117 for BTSO: 0.5Er to 93 for BTSO: 0.5Er/1Yb and the permittivity ε' increased from 3972 to 6071, so BTSO: 0.5Er/1Yb good crystalline material candidate for capacitors application due to its higher permittivity.

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Equilibrium Conductivity for Er Doped BaTiO₃

Cited by 10 publications

References 0 publications

Oxygen Diffusion Phenomena and Hydrogen Incorporation in Reducing BaTiO₃ Ceramics Doped with Ho below Solubility Limit

Oxygen Diffusion Phenomena and Hydrogen Incorporation in Reducing BaTiO₃ Ceramics Doped with Ho below Solubility Limit

Kinetic Process of Reoxidation of Base Metal Technology BaTiO₃‐Based Multilayer Capacitors

Er<sup>3+</sup> and Er<sup>3+</sup>/Yb<sup>3+</sup> Ions Embedded in Nano-Structure BaTi<sub>0.9</sub>Sn<sub>0.1</sub>O<sub>3</sub>: Structure, Morphology and Dielectric Properties

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Equilibrium Conductivity for Er Doped BaTiO3

Cited by 10 publications

References 0 publications

Oxygen Diffusion Phenomena and Hydrogen Incorporation in Reducing BaTiO3 Ceramics Doped with Ho below Solubility Limit

Oxygen Diffusion Phenomena and Hydrogen Incorporation in Reducing BaTiO3 Ceramics Doped with Ho below Solubility Limit

Kinetic Process of Reoxidation of Base Metal Technology BaTiO3‐Based Multilayer Capacitors

Er&lt;sup&gt;3+&lt;/sup&gt; and Er&lt;sup&gt;3+&lt;/sup&gt;/Yb&lt;sup&gt;3+&lt;/sup&gt; Ions Embedded in Nano-Structure BaTi&lt;sub&gt;0.9&lt;/sub&gt;Sn&lt;sub&gt;0.1&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;: Structure, Morphology and Dielectric Properties

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Equilibrium Conductivity for Er Doped BaTiO₃

Oxygen Diffusion Phenomena and Hydrogen Incorporation in Reducing BaTiO₃ Ceramics Doped with Ho below Solubility Limit

Oxygen Diffusion Phenomena and Hydrogen Incorporation in Reducing BaTiO₃ Ceramics Doped with Ho below Solubility Limit

Kinetic Process of Reoxidation of Base Metal Technology BaTiO₃‐Based Multilayer Capacitors

Er<sup>3+</sup> and Er<sup>3+</sup>/Yb<sup>3+</sup> Ions Embedded in Nano-Structure BaTi<sub>0.9</sub>Sn<sub>0.1</sub>O<sub>3</sub>: Structure, Morphology and Dielectric Properties