Spectroscopic features of Ni2+ ion in PbO–Bi2O3–SiO2 glass system

Suresh, B.; Reddy, M. Srinivasa; Reddy, A. Siva Sesha; Gandhi, Y.; Kumar, V. Ravi; Veeraiah, N.

doi:10.1016/j.saa.2015.01.058

Cited by 40 publications

(7 citation statements)

References 53 publications

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“…Among different components of CaO -Li 2 O -SiO 2 glass composition, SiO 2 is a well-known glass former that is predicted to collaborate in the glass matrix with tetrahedral [SiO 4=2 ] 0 units, while the SiO 4 tetrahedral form shares all four oxygen atoms [26]. As demonstrated in the equilibrium process below, adding Li 2 O (glass modifier) to silicate glasses causes the creation of non-bridging oxygens (NBOs) and other silicate structural groups inside the glass matrix.…”

Section: Resultsmentioning

confidence: 99%

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Impact of high NiO content on the structural, optical, and dielectric properties of calcium lithium silicate glasses

Ibrahim

Abo-Mosallam

Mahdy

et al. 2022

J Mater Sci: Mater Electron

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Glasses with the composition (11.5 − ×) CaO − 23.5Li2O − 65SiO2: × NiO mol. % (0 $$\le \times \leq$$ ≤ × ≤ 11.5) were synthesized by melt-quenching method. And a number of physical parameters have been established. The refractive index and energy gap were also used to estimate the metallization criterion, where these glasses have shown values fallings between high (insulators) and low (metals), indicating that they are semiconductors. The XRD pattern shows the amorphous nature of investigated glasses. A number of spectroscopic analyses of the studied glasses were performed, in relation to NiO content, including Fourier transform infrared (FTIR) and UV–Visible diffuse reflectance spectroscopy (DRS). Due to compositional changes, FTIR measurements have revealed structural changes in the glass network. Furthermore, with increasing NiO content, the asymmetrical bands of silicate units increase. The creation of Ni–O–Si bonds in the silicate matrix has been attributed to the introducing heavier Ni+2 as [NiO4]2− tetrahedral species in substitution of the lighter silicon ion in the [SiO4]4− network, but it could also operate as a network modifier in glass materials. The Ni2+ ion may have behaved as a network intermediary, causing more compact structure. The mechanism of charge transfer in the glass compositions under investigation is studied using broadband dielectric spectroscopy. For the first time, the relationship between the hopping time of free ions and dc conductivity is illustrated. All of the glasses under investigation have the same charge transport mechanism. The results suggest the semiconducting nature of these glasses.

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Section: Resultsmentioning

confidence: 99%

“…ion occupying a network forming tetrahedral geometry and the other two thirds occupying a fivefold coordination in the bioglass. Finally, Suresh et al [23] studied the spectroscopic characteristics of lead-bismuth-silicate glasses containing 0-1.0 mol. % NiO and found that Ni 2?…”

Section: Introductionmentioning

confidence: 99%

Impact of high NiO content on the structural, optical, and dielectric properties of calcium lithium silicate glasses

Ibrahim

Abo-Mosallam

Mahdy

et al. 2022

J Mater Sci: Mater Electron

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“…Functional groups such as P–O–P (asymmetric and symmetric stretching) and Bi–O (bending and stretching) vibrations along with hydroxyl groups are expected from the host glass matrices. Transmission bands that are detected from each infrared spectrum and their assignments are shown below: The band at about 590 cm –1 was due to Bi–O bending vibrations of BiO 6 units The band at 960 cm –1 was attributed to the asymmetric stretching of P–O–P linkages with a metaphosphate group (Q 2 units) …”

Section: Resultsmentioning

confidence: 99%

Structural and luminescence properties of Sm³⁺‐doped bismuth phosphate glass for orange‐red photonic applications

2018

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In the present study, the effect of bismuth oxide (Bi O ) content on the structural and optical properties of 0.5Sm -doped phosphate glass and the effect of concentration on structural and optical properties of Sm -doped bismuth phosphate (BiP) glass were studied. Structural characterization was accomplished using X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), Fourier transform infrared (FTIR) spectroscopy and P nuclear magnetic resonance (NMR) spectroscopy. Optical properties were studied using absorption, photoluminescence and decay measurements. Using optical absorption spectra, Judd-Ofelt parameters were derived to determine the local structure and bonding in the vicinity of Sm ions. The emission spectra of Sm -doped BiP glass showed two intense emission bands, G → H (orange) and G → H (red) for which the stimulated emission cross-sections (σ ) and branching ratios (β) were found to be higher. The quantum efficiencies were also calculated from decay measurements recorded for the G level of Sm ions. The suitable combination of Bi O (10 mol%) and Sm (0.5 mol%) ions in these glasses acted as an efficient lasing material and might be suitable for the development of visible orange-red photonic materials.

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“…Gambar 4.4 adalah hasil uji FTIR yang berupa grafik hubungan antara bilangan gelombang dan transmitansi. Ikatan grup silika terlihat pada bilangan gelombang antara 950 -1200 cm -1 (Gao et al, 2012;Suresh et al, 2015). Pada bilangan gelombang 950 -1000 cm -1 menunjukkan variasi ikatan pada vibrasi regangan antisimetrik dari ikatan O-Si-O di unit tetrahedral SiO4.…”

Section: Pengaruh Nio Terhadap Struktur Glass Sio2-b2o3-bi2o3-na2co3unclassified

Pengaruh NiO terhadap struktur dan dielektrisitas glass SiO2-Bi2O3-B2O3-Na2CO3 berbasis silika gel dari pasir Alam Bancar Tuban Jawa Timur

Muniroh¹,

Diantoro²,

Hidayat³

2021

JMIPAP

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Semakin berkembangnya ilmu pengetahuan, pemanfaatan silika juga semakin beragam. Salah satu contoh apliksinya adalah glass fungsional yang memiliki multi sifat yakni optic, dielektrik, dan magnetik. Namun, sejauh ini di Indonesia belum ditemui penelitian yang secara komprehensif tentang glass dengan multi sifat. Sintesis silika (SiO2) dari pasir alam pantai Bancar Tuban dilakukan dengan proses sol-gel. Hasil dari proses tersebut adalah SiO2 ukuran nano yang diharapkan mampu menurunkan titik leleh SiO2. Dalam tahap sitesis glass, untuk menurunkan titik leleh SiO2 juga ditambah beberapa oksida seperti B2O3, Bi3O3, dan Na2CO3 serta untuk mempengaruhi struktur dan dielektrisitas glass ditambahkan NiO. Komposisi penambahan NiO bervariasi yaitu 50SiO2- 25B2O3- (6.5-x)Bi3O3- 18.5Na2CO3- xNiO (x = 0, 1, 2, 3 dan 4 persentase massa). Setelah semua komposisi dicampur, kemudian dipanaskan hingga suhu 450 derajat Celsius selama 120 menit kemudian dinaikkan pada suhu 950 derajat Celsius selama 60 menit didalam krusibel. Pendinginannya dilakukan dengan slowcooling hingga suhu ruang. Kemudian sampel glass dipisahkan dari krusibel dan di karakterisasi stuktur menggunakan DTA, XRD, SEM-EDAX dan FTIR serta dielekrisitas menggunakan kapasitansi meter. Telah dihasilkan sampel berstruktur glass. Sebagian kecil sampel terbentuk kristal yang ditunjukkan beberapa puncak pada sampel yang merupakan fase dari Bi2O3. Hal ini juga terlihat pada morfologi hasil SEM-EDX yang menunjukkan adanya butiran Bi2O3. Pada pengukuran dielektrisitas dengan bertambahnya NiO, konstanta dielektrik meningkat. Namun dengan pengaruh intensitas, dielektrisitas glass menurun terkuantisasi. Didapat konstanta dielektrik tertinggi adalah 12,68 x 103 pada sampel glass dengan doping NiO 4 persentase massa di intensitas nol. Sedangkan pengaruh medan magnet menunjukkan kenaikan konstanta dielektrik.

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Spectroscopic features of Ni2+ ion in PbO–Bi2O3–SiO2 glass system

Cited by 40 publications

References 53 publications

Impact of high NiO content on the structural, optical, and dielectric properties of calcium lithium silicate glasses

Impact of high NiO content on the structural, optical, and dielectric properties of calcium lithium silicate glasses

Structural and luminescence properties of Sm³⁺‐doped bismuth phosphate glass for orange‐red photonic applications

Pengaruh NiO terhadap struktur dan dielektrisitas glass SiO2-Bi2O3-B2O3-Na2CO3 berbasis silika gel dari pasir Alam Bancar Tuban Jawa Timur

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Spectroscopic features of Ni2+ ion in PbO–Bi2O3–SiO2 glass system

Cited by 40 publications

References 53 publications

Impact of high NiO content on the structural, optical, and dielectric properties of calcium lithium silicate glasses

Impact of high NiO content on the structural, optical, and dielectric properties of calcium lithium silicate glasses

Structural and luminescence properties of Sm3+‐doped bismuth phosphate glass for orange‐red photonic applications

Pengaruh NiO terhadap struktur dan dielektrisitas glass SiO2-Bi2O3-B2O3-Na2CO3 berbasis silika gel dari pasir Alam Bancar Tuban Jawa Timur

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Structural and luminescence properties of Sm³⁺‐doped bismuth phosphate glass for orange‐red photonic applications