scholarly journals Karakterisasi Mikrostruktur Material Feroelektrik Ba0.8Sr0.2TiO3 (BST) dengan Variasi Suhu Annealing (Halaman 70 s.d. 72)

2015 ◽  
Vol 18 (53) ◽  
Author(s):  
Rahmi Dewi ◽  
Krisman ◽  
Khaironiati ◽  
Fauziana
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Barium Strontium ◽  
Scanning Electron

Sampel Barium Strontium Titanate, Ba0.8Sr0.2TiO3 (BST) telah disediakan dengan menggunakan reaksi kimia padatan. Mikrostruktur sampel telah dikarakterisasi dengan menggunakan teknik difraksi sinar-X (XRD) dan Scanning  Electron Microscopy (SEM). Sampel disediakan dengan variasi suhu yang berbeda yaitu pada suhu 600oC, 700 oC dan 800oC selama 60 menit di udara. Karakterisasi XRD menunjukkan dengan meningkatnya suhu annealing maka kristaline sampel semakin meningkat dengan struktur tetragonal. Karakterisasi SEM menunjukkan sampel adalah homogen dengan ukuran butiran  seragam. Ukuran butiran sampel akan bertambah dengan bertambahnya suhu annealing. Seluruh sampel mempunyai ukuran butiran dalam nanometer.

scholarly journals KARAKTERISASI KAPASITOR BARIUM STRONTIUM TITANAT (BST) Ba0,75 Sr0,25 TiO3 , YANG DIBUAT MENGGUNAKAN METODE SOL-GEL

2019 ◽  
Vol 16 (1) ◽  
pp. 65
Author(s):  
Rahmi Dewi ◽  
Tiara Pertiwi ◽  
Krisman Krisman
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Dielectric Constant ◽  
Impedance Spectroscopy ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Sol Gel ◽  
Barium Strontium ◽  
Scanning Electron

The thin film of Barium Strontium Titanate (BST) has been studied withcomposition ofby using sol-gel method that annealed in temperature of 600oC and 650oC. The thin film of BST is characterized by using Field Emission Scanning Electron Microscopy (FESEM) and an impedance spectroscopy. The results of  FESEM characterization for samples in temperature of 600oC and 650oC are 55.83 nm and 84.88 nm in thickness respectively. The result of impedance spectroscopy characterization given frequency values obtained by the impedance value of real and imaginary.The capacitance value at a frequency of 20 Hz from a thin film of BST in temperature of 600oC and 650oC are 69.36Fand138.70F. The dielectric constant of the thin film of BST in temperature of 600oC and 650oC are 22.17 dan 131.56 respectively.

Pembuatan dan Karakterisasi Kapasitor Barium Strontium Titanat (Bst) Ba0,75 Sr0,25 TiO3

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Rahmi Dewi ◽  
Krisman Krisman ◽  
Tiara Pertiwi ◽  
Tengku Luqman
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Impedance Spectroscopy ◽  
Field Emission ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Sol Gel ◽  
Barium Strontium ◽  
Scanning Electron

Lapisan tipis Barium Strontium Titanate (BST) telah ditelaah dengan komposisi  Ba0.75 Sr0.25 TiO3 menggunakan metode sol-gel yang digabungkan pada suhu 600 dan 650oC. Lapisan tipis BST dikarakterisasi menggunakan Field Emission Scanning Electron Microscopy (FESEM) dan spektroskopi impedansi. Hasil dari karakterisasi FESEM untuk sampel pada suhu 600 dan 650oC ialah 55.83 nm dan 84.88 nm dari segi ketebalan secara berurutan. Hasil dari karakterisasi spektroskopi impedansi berdasarkan nilai frekuensi menunjukkan nilai impedansi yang nyata dan imajiner. Nilai kapasitsa pada frekuensi 20 Hz dari lapisan tipis BST pada suhu 600 dan 650oC ialah 69.36 dan 138.70 F. Konstanta dielektrik dari lapisan tipis BST pada suhu 600 dan 650oC ialah 22.17 dan 131.56 secara berurutan.   The thin film of Barium Strontium Titanate (BST) has been studied with composition of Ba0.75 Sr0.25 TiO3 by using sol-gel method that annealed in temperature of 600oC and 650oC. The thin film of BST is characterized by using Field Emission Scanning Electron Microscopy (FESEM) and an impedance spectroscopy. The results of FESEM characterization for samples in temperature of 600 dan 650oC are 55.83 nm and 84.88 nm in thickness respectively. The result of impedance spectroscopy characterization given frequency values obtained by the impedance value of real and imaginary.The capacitance value at a frequency of 20 Hz from a thin film of BST in temperature of 600 dan 650oC are 69.36 F and 138.7oF. The dielectric constant of the thin film of BST in temperature of 600 dan 650oC are 22.17 and 131.56 respectively.

Leaching Properties of Immobilization of HLW into SrTiO3 Ceramics

2011 ◽  
Vol 332-334 ◽  
pp. 1807-1811 ◽  
Author(s):  
Rui Zhu Zhang ◽  
Yong Wei Gao ◽  
Jian Sheng Wang ◽  
Luke Li ◽  
Wan Shan Su
Keyword(s):  
Crystal Structure ◽  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Strontium Titanate ◽  
Synthesis Process ◽  
Temperature Synthesis ◽  
Leach Rate ◽  
High Temperature Synthesis ◽  
Technology And Economy ◽  
Scanning Electron

In this work, Strontium Titanate samples were synthsized by self-propagating high-temperature synthesis (SHS). Sr2+ directly took part in the synthesis process. As a result, immobilization limitation issue is basically resolved. The Strontium titanate was characterized by crystal structure, dense properties, leach rate, microstructure and scanning electron microscopy. And the synthesis process is feasible in technology and economy. It can be concluded that the strontium titanate synroc is a perfect material to immobilize HLW.

Preparation of Strontium Titanate Nanocubes Using Titanium Alkoxide and their Accumulations by Capillary Force

2011 ◽  
Vol 485 ◽  
pp. 309-312 ◽  
Author(s):  
Shogo Iwatsuki ◽  
Masatoshi Kera ◽  
Kouichi Nakashima ◽  
Ichiro Fujii ◽  
Takahiro Takei ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Strontium Titanate ◽  
Solvothermal Method ◽  
Titanium Isopropoxide ◽  
Titanium Alkoxide ◽  
X Ray Diffraction ◽  
Dense Structure ◽  
X Ray ◽  
Scanning Electron

Nanocubes accumulations were built up by meniscus method and developed to achieve a dense structure. For the first attempt, strontium titanate (SrTiO3, ST) nanocubes were selected for the nanocubes accumulations. The ST nanocubes were prepared by a solvothermal method. For Strontium titanate nanocubes, Sr(OH)2 and titanium isopropoxide (TP) were used as starting materials and were heated at 240°C for 18h in an autoclave. Size distribution of TP-derived ST nanocubes was narrower than TiO2-derived ST nanocubes. Moreover ST nanocubes accumulations were prepared by a meniscus method. A dense ST nanocubes accumulation of over 1 μm was prepared at an angle of 50 degrees at 60 °C. The crystal structures were determined by X-ray diffraction (XRD) and the microstructures were observed by scanning electron microscopy (SEM).

scholarly journals Karakterisasi Struktur Morfologi Material Ferroelektrik Barium Stronsium Titanat (BaxSr1-xTiO3) dan Stronsium Titanat (SrTiO3) dengan Variasi Komposisi Barium Dan Stronsium

2020 ◽  
Vol 5 (5) ◽  
Author(s):  
Alpi Zaidah
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Holding Time ◽  
Barium Strontium ◽  
Scanning Electron

Material ferroelektrik Barium Strontium Titanat (BaxSr1-xTiO3, BST) dan (SrTiO3, ST) dengan variasi komposisi Barium dan Stronsium (x<0,5) telah dibuat menggunakan metode reaksi fasa padat. Sampel dicetak dalam bentuk bulk (padatan) kemudian di-sintering pada temperatur 1100oC dengan holding time 2 jam. Karakterisasi sampel dilakukan Scanning Electron Microscopy (SEM) bertujuan untuk mengetahui struktur morfologi bulk barium stronsium titanat (BaxSr1-xTiO3) dan stronsium titanat (SrTiO3). 

Electron microscopy of the barium strontium titanate film structure on Pt-Ti-SiO2-Si substrates after laser annealing

2009 ◽  
Vol 51 (7) ◽  
pp. 1482-1484 ◽  
Author(s):  
O. M. Zhigalina ◽  
D. N. Khmelenin ◽  
K. A. Vorotilov ◽  
A. S. Sigov ◽  
I. G. Lebo
Keyword(s):  
Electron Microscopy ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Laser Annealing ◽  
Film Structure ◽  
Si Substrates ◽  
Barium Strontium

Pathogenesis of Human Hair Defects

1974 ◽  
Vol 32 ◽  
pp. 12-13
Author(s):  
P.S. Porter ◽  
T. Aoyagi ◽  
R. Matta
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Human Hair ◽  
Standard Techniques ◽  
Scanning Electron

Using standard techniques of scanning electron microscopy (SEM), over 1000 human hair defects have been studied. In several of the defects, the pathogenesis of the abnormality has been clarified using these techniques. It is the purpose of this paper to present several distinct morphologic abnormalities of hair and to discuss their pathogenesis as elucidated through techniques of scanning electron microscopy.

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