Sintesis Senyawa Aurivillius Ca1-xBi3,5+xLa0,5Ti4-xMnxO15: Struktur dan Sifat Dielektrik

Sintesis senyawa feroelektrik yang berbasis fasa Aurivillius berlapis empat (n = 4) yang didadah kation La3+ dan Mn3+, Ca1-xBi3,5+xLa0,5Ti4-xMnxO15 dengan x = 0, 0,2, 0,4, 0,6, 0,8, dan1 telah dilakukan dengan teknik lelehan garam. Karakterisasi produk dengan difraksi sinar-X (XRD) menunjukkan bahwa fasa tunggal Aurivillius ditunjukkan oleh sampel dengan x = 0, 0,2, 0,4, dan 0,6. Refinement struktur dengan teknik Le Bail diketahui bahwa senyawa Aurivillius yang terbentuk sesuai dengan simetri ortorombik dan grup ruang A21am. Analisis dengan Scanning Electron Microscopy (SEM) untuk semua sampel memperlihatkan morfologi sampel berupa lempengan yang merupakan ciri khas senyawa Aurivillius. Nilai konstanta dielektrik sampel dan konduktivitasnya mengalami kenaikan dengan meningkatnya x. Konduktivitas paling tinggi dimiliki oleh sampel x = 0,2 yang diperkirakan akibat adanya interaksi pertukaran ganda (double exchange) antara Mn3+ dan Mn4+.Synthesis of Aurivillius Compounds Ca1-xBi3,5 + xLa0,5Ti4-xMnxO15: Structure and Dielectric Properties. Synthesis of ferroelectric compounds based on a four-phase Aurivillius phase (n = 4) which is doped with La3+ and Mn3+ cations, Ca1-xBi3,5+xLa0,5Ti4-xMnxO15 with x = 0, 0.2, 0.4, 0.6, 0 , 8, and 1 were carried out by molten salts technique. Characterization of products using X-ray diffraction (XRD) revealed that the single phase Aurivillius was shown by the samples with x = 0, 0,2, 0,4, and 0,6. The results of refinement show that the Aurivillius phase formed has orthorhombic symmetry with A21am space group. Morphology analysis by scanning electron microscopy (SEM) for all samples shows the plate-like as the characteristic of Aurivillius compounds. The value of dielectric constant and conductivity of the samples increases as increase of x. The conductivity of x = 0.2 is the highest predicted due to the interaction of double exchange between Mn3+ and Mn4+.

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SYNTHESIS AND DIELECTRIC PROPERTIES OF FOUR-LAYERED AURIVILLIUS SrBi4Ti4O15 DOPED Nd3+ AND Mn4+

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.11.2.714.127-134 ◽

2016 ◽

Vol 11 (2) ◽

pp. 127

Author(s):

Sestry Misfadhila ◽

Evi Adhelina ◽

Yestria Rilda ◽

Syukri Arief ◽

Zulhadjri Zulhadjri

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Dielectric Constant ◽

Xrd Analysis ◽

Orthorhombic Symmetry ◽

Molten Salt Method ◽

X Ray Diffraction ◽

Aurivillius Phase ◽

X Ray ◽

Scanning Electron

Synthesis of four-layered Aurivillius compound doped with Nd3+ and Mn4+ cations, SrBi3.5Nd0.5Ti4-xMnxO15 (x = 0; 0.5; 1) was carried out using molten salt method with a mixture of Na2SO4/K2SO4 as a flux. The synthesized products were characterized using X-ray diffraction (XRD) and refined by Le Bail technique. The results of XRD analysis show that the four-layered Aurivillius compound formed, however there are additional peaks identified as perovskite and Bi7.68Ti0.32O12.16 phases for x = 0 and perovskite and Sr4Ti3O10phases for x = 0.5 and 1. The results of refinement show that four-layered Aurivillius phase formed has orthorhombic symmetry with A21am space group. Scanning Electron Microscopy (SEM) shows the plate like morphology that are characteristic of Aurivillius compound. Dielectric constant of the samples show increasing value as increasing of Mn4+ concentration.

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SYNTHESIS AND DIELECTRIC PROPERTIES OF FOUR-LAYERED AURIVILLIUS SrBi4Ti4O15 DOPED Nd3+ AND Mn4+

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.v11i2.714 ◽

2016 ◽

Vol 11 (2) ◽

pp. 127

Author(s):

Sestry Misfadhila ◽

Evi Adhelina ◽

Yestria Rilda ◽

Syukri Arief ◽

Zulhadjri Zulhadjri

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Dielectric Constant ◽

Xrd Analysis ◽

Orthorhombic Symmetry ◽

Molten Salt Method ◽

X Ray Diffraction ◽

Aurivillius Phase ◽

X Ray ◽

Scanning Electron

Synthesis of four-layered Aurivillius compound doped with Nd3+ and Mn4+ cations, SrBi3.5Nd0.5Ti4-xMnxO15 (x = 0; 0.5; 1) was carried out using molten salt method with a mixture of Na2SO4/K2SO4 as a flux. The synthesized products were characterized using X-ray diffraction (XRD) and refined by Le Bail technique. The results of XRD analysis show that the four-layered Aurivillius compound formed, however there are additional peaks identified as perovskite and Bi7.68Ti0.32O12.16 phases for x = 0 and perovskite and Sr4Ti3O10phases for x = 0.5 and 1. The results of refinement show that four-layered Aurivillius phase formed has orthorhombic symmetry with A21am space group. Scanning Electron Microscopy (SEM) shows the plate like morphology that are characteristic of Aurivillius compound. Dielectric constant of the samples show increasing value as increasing of Mn4+ concentration.

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Preliminary Preparation and Characterization Studies of Cellulose from Merbau (Intsia bijuga)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.620.314 ◽

2012 ◽

Vol 620 ◽

pp. 314-319

Author(s):

Nur Amira Mamat Razali ◽

Fauziah Abdul Aziz ◽

Saadah Abdul Rahman

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Alkaline Treatment ◽

Raw Material ◽

X Ray Diffraction ◽

X Ray ◽

Preliminary Preparation ◽

Characterization Studies ◽

Scanning Electron

Hardwood is wood from angiosperm trees. The characteristic of hardwood include flowers, endosperm within seeds and the production of fruits that contain the seeds. This paper aims to discuss the preparation and characterization of cellulose obtained from hardwood. The hardwood Merbau (Intsia bijuga) was chosen as raw material in this study. Alkaline treatment and delignification methods were used for the preparation of cellulose. Acid hydrolysis was employed to produce cellulose nanocrystal (CNC). The treated and untreated samples were characterized using x-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The final product, from both trated and untreated samples were then compared.

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Hydrothermal Synthesis and Characterization of BiFeO3 Polyhedral Crystallites

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.174-177.508 ◽

2012 ◽

Vol 174-177 ◽

pp. 508-511

Author(s):

Lin Lin Yang ◽

Yong Gang Wang ◽

Yu Jiang Wang ◽

Xiao Feng Wang

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Transmission Electron Microscopy ◽

Synthesis And Characterization ◽

X Ray Diffraction ◽

Xrd Pattern ◽

X Ray ◽

Transmission Electron ◽

Scanning Electron

BiFeO3 polyhedrons had been successfully synthesized via a hydrothermal method. The as-prepared products were characterized by power X-ray diffraction (XRD) pattern, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The possible mechanisms for the formation of BiFeO3 polyhedrons were discussed. Though comparison experiments, it was found that the kind of precursor played a key role on the morphology control of BiFeO3 crystals.

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Automated morphometrical characterization of material phases of fired clay bricks based on Scanning Electron Microscopy, Energy Dispersive X-ray Spectroscopy and Powder X-ray Diffraction

Construction and Building Materials ◽

10.1016/j.conbuildmat.2021.122909 ◽

2021 ◽

Vol 288 ◽

pp. 122909

Author(s):

Thomas Buchner ◽

Thomas Kiefer ◽

Wolfgang Gaggl ◽

Luis Zelaya-Lainez ◽

Josef Füssl

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Energy Dispersive ◽

X Ray Diffraction ◽

X Ray ◽

Clay Bricks ◽

Scanning Electron

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Characterization of a coating for radioprotection, by X-ray diffraction, scanning electron microscopy, and dispersive energy spectroscopy

Construction and Building Materials ◽

10.1016/j.conbuildmat.2022.126326 ◽

2022 ◽

Vol 321 ◽

pp. 126326

Author(s):

Gladis Aparecida Galindo Reisemberger de Souza ◽

Ramón Sigifredo Cortés Paredes ◽

Frieda Saicla Barros ◽

Gustavo Bavaresco Sucharski ◽

Sebastião Ribeiro Junior ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

X Ray Diffraction ◽

X Ray ◽

Scanning Electron

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X-ray diffraction, scanning electron microscopy and magnetic characterization of hydrogenated Ni–Pd alloys

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2004.04.103 ◽

2004 ◽

Vol 384 (1-2) ◽

pp. 152-156 ◽

Cited By ~ 5

Author(s):

S.S.M. Tavares ◽

J.M. Pardal ◽

T. Gurova ◽

J.R.R. Bernardo ◽

J.M. Neto

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

X Ray Diffraction ◽

Magnetic Characterization ◽

X Ray ◽

Scanning Electron

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Characterization of Cobalt Oxide and Calcium‐Aluminum Oxide nano‐catalyst through Scanning Electron Microscopy, X‐ray diffraction, and Energy Dispersive X‐ray Spectroscopy

Microscopy Research and Technique ◽

10.1002/jemt.23504 ◽

2020 ◽

Vol 83 (9) ◽

pp. 1124-1131

Author(s):

Iram Gul ◽

Shujaul Mulk Khan ◽

Tariq Mehmood ◽

Zeeshan Ahmad ◽

Hussain Badshah ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Aluminum Oxide ◽

Cobalt Oxide ◽

Energy Dispersive ◽

X Ray Diffraction ◽

X Ray ◽

Nano Catalyst ◽

Scanning Electron

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The Characterization of Bovine Bone-Derived Hydroxyapatite Isolated Using Novel Non-Hazardous Method

Journal of Biomimetics Biomaterials and Biomedical Engineering ◽

10.4028/www.scientific.net/jbbbe.45.49 ◽

2020 ◽

Vol 45 ◽

pp. 49-56

Author(s):

Aniek Setiya Budiatin ◽

Samirah ◽

Maria Apriliani Gani ◽

Wenny Putri Nilamsari ◽

Chrismawan Ardianto ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Extraction Method ◽

Bovine Bone ◽

X Ray Diffraction ◽

X Ray ◽

Ft Ir ◽

Novel Method ◽

Scanning Electron

Bovine bone is a considerable source for the production of hydroxyapatite. The recent study reported a novel method to extract hydroxyapatite from bovine bone without producing hazardous residue. The bovine bones were cut and boiled in the opened chamber followed by boiling in pressurized tank. The bones were then soaked into 95% ethanol. Calcination was then conducted in 800°C, 900°C and 1,000°C, for 2 hours. The result was then grinded and sieved. The powder then was characterized using Fourier transform infrared (FT-IR), Scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) to measure the purity of hydroxyapatite. It is concluded that the hydroxyapatite derived from this process showed 100% purity, resulting 35.34 ± 0.39% w/w from the wet bone weight and 72.3% w/w from the dried weight. The present extraction method has been proven to yield high amount of pure hydroxyapatite as well as reducing the use of hazardous reagent.

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