Barium strontium titanate powder obtained by polymeric precursor method

Ries, Andreas; Simões, Alexandre Zirpoli; Cilense, M.; Zaghete, M. A.; Varela, José Arana

doi:10.1016/s1044-5803(03)00095-0

Cited by 67 publications

(36 citation statements)

References 4 publications

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“…Generally, the PL intensity was enhanced by the reduced particle sizes, due to the increased defects that were induced by the enlarged surface areas. Several groups have found that the PL intensities were directly related to the particle sizes of perovskite oxides [20, 37,39]. The increased defects caused by the reduced particle sizes enhanced the PL intensities.…”

Section: Resultsmentioning

confidence: 99%

“…Several studies were performed using template-directed approaches which have been demonstrated to be effective for the preparation of many materials using various synthetic methods (including HTMW heating) that often involve the coating of crystals on the template surface, followed by removal of the template [33,34]. In particular, polymer-metal oxide nanocomposites are currently of considerable interest as solution processable high-permittivity materials for electronic applications such as embedded, multilayer and highenergy-density capacitors, and gate insulators in organic field effect transistors [35][36][37][38][39]. In addition, colloidal nanocrystals stabilized by a layer of surfactants attached to their surface are synthesized with finer control over nanocrystal growth.…”

Section: Introductionmentioning

confidence: 99%

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Photoluminescence of BaZrO3 explained by a order/disorded transformation

Aguiar

Simões

Paskocimas

et al. 2015

J Mater Sci: Mater Electron

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A hydrothermal (HTMW) microwave method was used to synthesize ordered-disordered BaZrO 3 (BZ) nanoparticles at temperature of 140°C with times ranging from 15 min to 2 h. X-ray diffraction results verified the formation of BZ crystallites at a soaking time of 2 h while infrared data showed no traces of carbonate. Field emission scanning microcopy revealed a homogeneous size distribution of nanometric BZ powders. HTMW produced nanoparticles of pure BZ phase, with a size ranging from 40 to 80 nm. These results are in agreement with Raman scattering values which show that the HTMW synthesis route is rapid and cost effective. This method could be used as an alternative to obtain BZ nanoparticles as compared to other chemical methods. Intense photoluminescence in disordered BZ powders was observed at room temperature. The key of mystery of the intense PL emission is related to order-disorder structural in BZ lattice.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photoluminescence of BaZrO3 explained by a order/disorded transformation

Aguiar

Simões

Paskocimas

et al. 2015

J Mater Sci: Mater Electron

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“…Nilai konstanta dielektrik yang dihasilkan sebesar 15 pada rentang frekuensi 2 hingga 3 GHz. Berbagai penelitian tentang sintesis (Ba x Sr 1−x TiO 3 ) telah dilakukan dengan berbagai metode, seperti metode sol gel, metode Pachini, dan metode reaksi padatan [6].…”

Section: Pendahuluanunclassified

Pengaruh Temperatur Sintering pada Konstanta Dielektrik Barium Stronsium Titanat (Ba0,2Sr0,8TiO3) yang dibuat dengan Metode Reaksi Fasa Padat

Zaidah

2015

JFA

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IntisariPembuatan sampel Ba0,2Sr0,8TiO3 (BST) telah dilakukan dengan metode reaksi fasa padat. Sampel disintering pada suhu 900, 1000, dan 1100• C dengan holding time selama 2 jam. Karakterisasi pada sampel dilakukan menggunakan X-Ray Diffraction (XRD). Besarnya konstanta dielektrik diperoleh melalui pengujian dengan RLC meter. Berdasarkan analisa dengan perhitungan parameter kisi BST dengan suhu sintering 900, 1000, dan 1100• C adalah a = b = c berturut-turut 3,913, 3,910, dan 3,915 nm. Nilai parameter kisi a = b = c menunjukkan struktur kristal berbentuk kubik. Ukuran kristal dan regangan kisi sampel dengan suhu sintering 900, 1000, dan 1100• C berturut-turut adalah 93 nm, 104 nm, 110 nm dan 1,58%, 1,51%, 1,49%. Pengukuran konstanta dielektrik (K) dilakukan pada rentang frekuensi 0,01 hingga 10 kHz. Nilai maksimum terdapat pada nilai frekuensi minimum. Nilai K sampel dengan suhu sintering 900, 1000, dan 1100• C masing-masing sebesar 1388, 3299 dan 3870 pada frekuensi minimum. AbstractBa0,2Sr0,8TiO3 samples have been fabricated by solid state reaction. The samples were sintered at temperature 900, 1000, and 1100• C for 2 hours. Characterization of sample using XRD. The analysis exibits that the cubic lattice parameter of BST sintered at 900, 1000, and 1100• C are a = b = c respectively 3.913, 3.910, 3.915 nm. The particle sizes and lattice strains of sampel sintered at 900, 1000, and 1100• C respectively 93 nm, 104 nm, 110 nm and 1,58%, 1,51%, 1,49%. Dielectric constant (K) measurements were performed at the range of frequency 0.01 to 10 kHz where the values are maximum at a minimum frequency. The K values for samples sintered at 900, 1000, and 1100• C at minimum frequency are 1388, 3299 and 3870 respectively.

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“…Pembuatan BST dapat dilakukan beberapa cara diantaranya Metalorganic Chemical Vapor Deposition (MOCVD) [2], Pulsed Laser Deposition (PLD) [3], Magnetron Sputtering [4], serta Chemical Solution Deposition atau metode sol gel dan metode reaksi fasa padat (solid state reaction) [5]. .…”

Section: Pendahuluanunclassified

Struktur Mikro dan Sifat Listrik Material Ferroelektrik Barium Titanat dengan doping Stronsium

Suwarni

2015

JFA

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IntisariMaterial ferroelektrik Barium Strontium Titanat (BaxSr1−xTiO3, BST) dengan variasi doping mol Sr 0,01 ; 0,02 dan 0,03 telah dibuat menggunakan metode reaksi fasa padat. Sampel dicetak dalam bentuk bulk (padatan) kemudian di-sintering pada temperatur 900• C dengan holding time 2 jam. Karakterisasi sampel dilakukan menggunakan X-Ray Diffractometer (XRD) untuk mengetahui tingkat kekristalan dan ukuran kristal dari sampel. Pengujian RCL meter untuk mengetahui besarnya nilai konstanta dielektrik. Hasil karakterisasi XRD sampel memperoleh data dan diolah dalam bentuk grafik hubungan antara intensitas terhadap sudut 2 theta. Material BST dengan variasi doping mol Sr 0,01 ; 0,02 dan 0,03 memiliki struktur kristal tetragonal, dengan parameter kisi Sr 0,01 dan 0,03 adalah sama yaitu a = b = 3,996Å dan c = 4,012Å sedangkan untuk Sr 0,02 adalah a = b = 3,998Å dan c = 4,022Å. Ukuran kristal berturut-turut adalah 28,4 nm; 32,3 nm dan 54,8 nm. Semakin besar ukuran kristal, nilai rata-rata regangan kisi semakin kecil seiring dengan meningkatnya penambahan Sr. Pengukuran konstanta dielektrik (K) dilakukan pada rentang frekuensi 1 kHz sampai 80 kHz dan nilai tertinggi adalah pada Sr 0,03 sebesar 18,55. AbstractBarium Strontium Titanate ferroelectric material (BaxSr1−xTiO3) with doping variation Sr 0.01 mol; 0.02 and 0.03 have been made using solid state reaction method. Samples printed in the form of bulk (solid) and then in-sintering at a temperature of 900• C with a holding time 2 hours. Characterization of samples was performed using X-Ray Diffractometer (XRD) to determine the level kekristalan and crystal size of the sample. RCL meter testing to determine the value of the dielectric constant. XRD characterization results of the samples obtained data and processed in the form of a graph of intensity against angle 2 theta. BST material with doping variation Sr 0.01 mol; 0.02 and 0.03 have a tetragonal crystal structure, in which the Sr lattice parameter of 0.01 and 0.03 are the same, namely a = b = 3.996Å and c = 4.012Å, while for Sr 0.02 is a = b = 3.998Å and c = 4.022Å. Crystal size respectively adalah 28.4 nm; 32.3 nm and 54.8 nm. The larger the crystal size, the average value of the smaller lattice strain along with the increasing addition of Sr. Measurement of dielectric constant (K) performed in the frequency range 1 kHz to 80 kHz and the highest value was at 0.03 Sr at 18.55.

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Barium strontium titanate powder obtained by polymeric precursor method

Cited by 67 publications

References 4 publications

Photoluminescence of BaZrO3 explained by a order/disorded transformation

Photoluminescence of BaZrO3 explained by a order/disorded transformation

Pengaruh Temperatur Sintering pada Konstanta Dielektrik Barium Stronsium Titanat (Ba0,2Sr0,8TiO3) yang dibuat dengan Metode Reaksi Fasa Padat

Struktur Mikro dan Sifat Listrik Material Ferroelektrik Barium Titanat dengan doping Stronsium

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