Influence of NiO Nanoparticles on Physical Properties of TiO2 Doped Magnesium Ultra-Phosphate Glass-Ceramics

2015 ◽  
Vol 1107 ◽  
pp. 32-37
Author(s):  
S.F. Abd Rahman ◽  
M.R. Sahar ◽  
Sib Krishna Ghoshal
Keyword(s):  
Physical Properties ◽  
Glass Ceramics ◽  
Nio Nanoparticles ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Amorphous Nature ◽  
Quenching Method ◽  
Nio Nps ◽  
Controlled Doping

Tuning the physical properties of inorganic glass-ceramics through controlled doping of magnetic nanoparticles is topically challenging. A series of glass-ceramic having chemical composition 75P2O5-17MgO-(3-x)TiO2-5Li2O with x = 0 to 3 mol% containing nickel oxide (NiO) nanoparticles (NPs) are prepared by melt quenching method (MQT) via heat treatment at 350 °C. The effect of NiO NPs on thermal and magnetization response are examined. X-Ray Diffraction (XRD) pattern confirm the amorphous nature of the samples. Differential Thermal Analysis (DTA) measurement shows the decrement of glass stability from 327°C to 295°C with the increase of titanium dioxide (TiO2) contents which are glass seem to be unstable. Significant increase in the magnetization is evidenced with the increase of NiO nanoparticles from 1.5 mol% to 2 mol%. The improved physical properties of these glass-ceramics suggest their usefulness in photo-electronic.

The Preparation and Physical Characteristic of Sm3+ Doped Borotellurite Glass

2016 ◽  
Vol 846 ◽  
pp. 69-74 ◽  
Author(s):  
M.R.S. Nasuha ◽  
K. Azman ◽  
H. Azhan ◽  
S.A. Senawi ◽  
Mardhiah Abdullah
Keyword(s):  
Physical Properties ◽  
Molar Volume ◽  
Potential Candidate ◽  
X Ray Diffraction ◽  
X Ray ◽  
Prepared Glass ◽  
Amorphous Nature ◽  
Compositional Changes ◽  
Optical Applications ◽  
Quenching Method

Borotellurite glasses were generally applied in rare earth optical materials due to their excellent physical properties. Samarium doped borotellurite glasses have been identified as one of the potential candidate for optical applications. Therefore, the aim of this study is to identify the physical properties of Sm3+ doped borotellurite glasses by mean of their density, molar volume, microhardness and X-ray diffraction. In this study, the Sm3+ doped borotellurite glasses of the system (70-x)TeO2-20B2O3-10ZnO-xSm2O3 as the samarium trioxide varies from (x = 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol%) have been prepared by melt-quenching method. The amorphous nature of the prepared glass samples have been confirmed through XRD spectral analysis. The values of density are found to vary from 4.541g/cm3 to 4.837g/cm3 as well as the values of molar volume as it varies from 29.118cm3/mol to 28.314cm3/mol with the increase of Sm3+ content. The physical properties corresponding to compositional changes have been analysed and the result are reported and presented.

Physical and Structural Properties of Neodymium Doped Lithium Boro-Tellurite Glasses

2019 ◽  
Vol 290 ◽  
pp. 53-59
Author(s):  
Yahya Norihan ◽  
Ahmad Ridzwan Bin Ab Rahim ◽  
Mardhiah Abdullah
Keyword(s):  
Structural Properties ◽  
Xrd Analysis ◽  
Ftir Spectra ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Prepared Glass ◽  
Amorphous Nature ◽  
Quenching Method ◽  
Xrd Patterns

Nd3+ doped lithium borotellurite glasses were successfully been prepared by conventional melt-quenching method with the chemical composition (70.0)B2O3-(5.0)TeO2-(25.0-x) Li2CO3-xNd2O3 (where x = 0.0, 0.2, 0.4, 0.6, 0.8 and 2.0 mol%) by varying the Neodymium content. The physical properties such as density, molar volume and oxygen packing density were measured. The structural properties have been studied through X-ray diffraction (XRD) analysis and Fourier Transform Infrared (FTIR) spectroscopy. The XRD pattern has been used to confirm the amorphous nature of the glass samples. There are no sharp peaks were observed in XRD patterns of the glass samples which confirmed the amorphous nature of the glass. FTIR spectra were used to analyse the functional groups present in the glass samples. The FTIR spectra reveal the presence of B-O-B, B-O, BO3, BO4,Te-O and characteristic of the hydrogen bond in the prepared glass samples.

Influence of NiO Nanoparticles on Magnetic Properties of Neodymium Doped Tellurite Glasses

2017 ◽  
Vol 268 ◽  
pp. 102-105 ◽  
Author(s):  
Md Rahim Sahar ◽  
Nur Amanina Mat Jan
Keyword(s):  
Room Temperature ◽  
X Ray Diffraction ◽  
Initial Curve ◽  
Melt Quenching ◽  
X Ray ◽  
Transmission Electron ◽  
Amorphous Nature ◽  
Quenching Method ◽  
Nio Nps ◽  
The Magnetic Field

Series of glass samples with composition (72.5-x)TeO2-15MgO-10Na2O-2.5Nd2O3-xNiO where 1.0 ≤ x ≤ 2.5 mol% are prepared using melt quenching method. The glasses are characterized via X-ray diffraction (XRD), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The XRD spectra confirmed the amorphous nature of prepared glasses. TEM images manifest the existence of NiO NPs which are homogeneously distributed in the glass matrix. The magnetization M(H) curve reveals that the glass displays an anomalous hysteresis behavior at room temperature. It is observed that M(H) is dependent on the NiO content. The initial curve of magnetization lies positively as a function of the magnetic field under 1000 H (O.e).

scholarly journals Five-fold twinned β-PbF2 nanocrystals in oxyfluoride glass ceramics

RSC Advances ◽  
2018 ◽  
Vol 8 (71) ◽  
pp. 40787-40793 ◽  
Author(s):  
Yuao Guo ◽  
Lijuan Zhao ◽  
Yuting Fu ◽  
Pan Dong ◽  
Liying Guo ◽  
...  
Keyword(s):  
Glass Ceramics ◽  
Lanthanide Ions ◽  
X Ray Diffraction ◽  
Oxyfluoride Glass ◽  
X Ray ◽  
Trivalent Lanthanide ◽  
Quenching Method

Oxyfluoride glass ceramics (GCs) doped with trivalent lanthanide ions (Ln3+) have been prepared using a conventional melting–quenching method and studied by X-ray diffraction (XRD).

Physical and Thermal Properties of Chitosan

2014 ◽  
Vol 979 ◽  
pp. 315-318 ◽  
Author(s):  
W. Siriprom ◽  
K. Chantarasunthon ◽  
K. Teanchai
Keyword(s):  
Physical Properties ◽  
Thermo Gravimetric Analysis ◽  
Raw Material ◽  
Hydroxyl Groups ◽  
Gravimetric Analysis ◽  
Biodegradable Films ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Good Agreement

This work aims at characterizing the thermal and physical properties of chitosan. The samples were evaluated for potentiality to use as raw material for biodegradable films raw material. Their thermal and physical properties have been also discussed in detail which Fourier Transform Infrared Spectroscopy (FTIR), Thermo-Gravimetric Analysis (TGA), Energy Dispersive X-Ray Fluorescence (EDXRF) and X-Ray Diffraction (XRD), respectively. The result of the XRD pattern indicated the sample has amorphous-crystalline structure and FTIR results confirmed the formation of intermolecular hydrogen bonding between the amino and hydroxyl groups of the sample. In good agreement between the EDXRF and TGA results, noticed that the removal of moisture and volatile material.

scholarly journals Effect of Neodymium Concentration on Structural and Optical Properties of Tellurite Based Glass System

2016 ◽  
Vol 846 ◽  
pp. 183-188 ◽  
Author(s):  
M.N. Azlan ◽  
Mohamed Kamari Halimah ◽  
S.O. Baki ◽  
W.M. Daud
Keyword(s):  
Optical Properties ◽  
Diffraction Method ◽  
Transmission Band ◽  
Glass System ◽  
X Ray Diffraction ◽  
X Ray ◽  
Amorphous Nature ◽  
Neodymium Concentration ◽  
Quenching Method ◽  
Xrd Method

Neodymium doped zinc borotellurite glass system were fabricated by using conventional melt-quenching method. The structural properties of the glass system were characterized by using X-ray Diffraction (XRD) method and Fourier Transform analysis (FTIR). The amorphous nature of the glass system was confirmed by using x-ray diffraction method. The transmission band of TeO3 structural units which indicate the existence of non-bridging oxygen was shown by FTIR analysis. The optical properties of the glass system were determined by using UV-Vis spectrophotometer. Several bands were shown in the absorption spectra which indicate the characteristic of neodymium ions. The obtained values of indirect optical band gap, Eopt lies in the range of 3.151 eV and 3.184 eV.

Structural Properties of Erbium Doped Tellurite Glass Embedded with Natural Ferrite Oxide Nanoparticles

2017 ◽  
Vol 268 ◽  
pp. 177-180 ◽  
Author(s):  
Puzi Anigrahawati ◽  
Md Rahim Sahar
Keyword(s):  
Wave Number ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Raman Spectroscopic ◽  
Trigonal Bipyramidal ◽  
Erbium Doped ◽  
Amorphous Nature ◽  
Glassy Materials ◽  
Quenching Method

Natural ferrite oxide nanoparticles (NPs) embed with tellurite glasses ((89-x) TeO2-10ZnO-1Er2O3-(x)Fe3O4, (x = 0 – 0.8 mol %)) were prepared by conventional melt quenching method to study the influence of the Fe3O4 NPs concentration on the stuctural properties of the glass. Studies on these glassy materials characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and RAMAN spectroscopic measurements are presented. It is observed that the amorphous nature of the glass is confirmed by x-ray diffraction. The FTIR studies support the formation of Te-O-Fe linkages. The FTIR spectra reveal modification in network structures evidenced from vibrational wave-number shifts of TeO4 and TeO3 structural units. Raman spectroscopy have been manipulated to observe the structural modification of [TeO4] trigonal bipyramidal structural unit.

STRUCTURAL CHARACTERIZATION OF SULFOBORATE GLASSES CONTAINING MAGNESIUM OXIDE

2016 ◽  
Vol 78 (6-11) ◽  
Author(s):  
S. A. Dalhatu ◽  
R. Hussin ◽  
Karim Deraman
Keyword(s):  
Molar Volume ◽  
Alkaline Earth ◽  
X Ray Diffraction ◽  
X Ray ◽  
Infra Red ◽  
Amorphous Nature ◽  
Quenching Method ◽  
The Fourier Transform ◽  
Glass Compositions

Magnesium sulfoborate glasses of different compositions were prepared using melt quenching method with the purpose of using it for optical properties. The Fourier Transform Infra-red (FTIR) Spectroscopy, Nuclear Magnetic Resonance (NMR) and X-Ray Diffraction (XRD) have been carried out. Density and molar volume have been evaluated and analysed. From the results of XRD, the absent of discrete and continuous sharp peaks confirmed the amorphous nature of the glass compositions while the results from both FTIR and NMR revealed the existence of BO3, BO4 units. Addition of MgO to sulfoborate influenced the conversion of the dominant BO3 groups to BO4 groups. The BO4 groups are known for creating complex defects that transform into that stable trap good for optical phenomena. It was observed that the density of glass increases while the molar volume is decreases with respect to increase in concentration of alkaline earth oxide in the glass compositions.

Effect of BaO on Thermo-Physical Properties of Lithium Zinc Silicate Glass-Ceramics

2011 ◽  
Vol 299-300 ◽  
pp. 503-507 ◽  
Author(s):  
Bin Zhai ◽  
Xiao Li Zhou ◽  
Shang Ru Zhai ◽  
Zhi Qiang Wang
Keyword(s):  
Electron Microscopy ◽  
Physical Properties ◽  
Expansion Coefficient ◽  
Glass Ceramics ◽  
Zinc Silicate ◽  
X Ray Diffraction ◽  
X Ray ◽  
Composite Glass ◽  
Thermo Physical Properties ◽  
Scanning Electron

Lithium zinc silicate (LZS) glasses containing Li2O–ZnO–SiO2–Na2O–B2O3–BaO–P2O5 with different BaO/(BaO+ZnO) ratios were prepared by conventional melt and quench technique and subsequently converted into glass-ceramics. The effect of BaO/(BaO+ZnO) ratio on various thermo-physical properties was investigated by changing the ratio from 0 to 0.226. The crystalline phases were characterized by X-ray diffraction technique on the composite glass-ceramics, including Li3Zn0.5SiO4, Li2OZnSiO4 and cristobalite phase. The thermal expansion coefficient (TEC) in the temperature range 70–400 oC increased from 107 × 10-7 to 141 ×10-7 / oC. The increase in expansion coefficient was associated with the formation of different phases which in turn influenced the rigidity/bonding in the glass-ceramics. The microstructure was analyzed by scanning electron microscopy (SEM), and the grain size became bigger after the addition of BaO.

Luminescence Emission in Borotellurite Glass Containing Manganese Nanoparticles Doped Eu3+ Ions

2017 ◽  
Vol 268 ◽  
pp. 106-110
Author(s):  
Siti Maisarah Aziz ◽  
Md Rahim Sahar
Keyword(s):  
Emission Spectra ◽  
Average Diameter ◽  
Excitation Wavelength ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Transmission Electron ◽  
Amorphous Nature ◽  
Schematic Energy Level Diagram ◽  
Manganese Nanoparticles

A series of europium doped magnesium borotellurite glasses embedded with manganese nanoparticles (Mn3O4 NPs) of composition (59-x)TeO2-30B2O3-10MgO-x1Eu2O3-1Mn3O4 with 0.5 ≤ x ≤ 1.5 mol % are prepared using melt quenching technique. The existence of broad hump in X-ray diffraction (XRD) pattern verifies the amorphous nature of glasses. The presence of Mn3O4 NPs with average diameter of ~11 nm and (1 0 3) lattice plane having 0.276 nm spacing in the glass matrix is confirmed by high resolution transmission electron microscope (HRTEM) image. The glass samples are excited under 390 nm excitation wavelength and the emission spectra are found to consist of four emission peaks centred at 587 nm, 610 nm, 651 nm and 700 nm assigned to the transition from 5D0 →7FJ (J = 1, 2, 3, 4) states. The schematic energy level diagram is proposed. All results will be discussed with respect to the composition of Eu3+ ion.

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