Complex Impedance and Magnetic Properties of Cr3+, Al3+ Co-Doped MgFe2O4 Nano-Structured Ceramics Synthesized by Sol–Gel Combustion Process

2012 ◽  
Vol 1 (3) ◽  
pp. 208-216
Author(s):  
Ali Jawad ◽  
S. S. Z. Ashraf ◽  
Rokiah Hashim ◽  
Raza Murad Ghalib
Keyword(s):  
Magnetic Properties ◽  
Sol Gel ◽  
Combustion Process ◽  
Complex Impedance ◽  
Gel Combustion ◽  
Co Doped

scholarly journals Luminescence properties and energy transfer of Tb3+, Eu3+ co-doped YTaO4 phosphors obtained via sol–gel combustion process

2020 ◽  
Vol 31 (16) ◽  
pp. 13688-13695
Author(s):  
Shangrui Nan ◽  
Feng Hong ◽  
Haiping Xu ◽  
Jingzhi Dou ◽  
Guixia Liu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Sol Gel ◽  
Combustion Process ◽  
Luminescence Properties ◽  
Gel Combustion ◽  
Co Doped

Structural and Magnetic Properties of Mn/Fe co-Doped ZnO Thin Films Prepared by Sol–Gel Technique

2014 ◽  
Vol 50 (8) ◽  
pp. 1-4 ◽  
Author(s):  
Robina Ashraf ◽  
Saira Riaz ◽  
Mahwish Bashir ◽  
Usman Khan ◽  
Shahzad Naseem
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Sol Gel ◽  
Zno Thin Films ◽  
Gel Technique ◽  
Structural And Magnetic Properties ◽  
Doped Zno ◽  
Co Doped

scholarly journals FABRICATION AND PROPERTIES OF Co DOPED Bi0.5K0.5TiO3 – BiFeO3 SOLID SOLUTION

2018 ◽  
Vol 56 (1A) ◽  
pp. 197
Author(s):  
Nguyen Hoang Tuan
Keyword(s):  
Solid Solution ◽  
Raman Spectroscopy ◽  
Magnetic Properties ◽  
Crystal Structures ◽  
Solid Solutions ◽  
Sol Gel ◽  
Structure And Properties ◽  
Antiferromagnetic Ordering ◽  
Co Doped ◽  
Good Agreement

In this study, we present some results on the structure and properties of the solid solution of Bi0.5K0.5TiO3– BiFeCoO3 (BKT – BFCO) by Sol-gel method. Crystal structures of BKT – BFCO solid solutions were studies by XRD and Raman spectroscopy. The results were in good agreement with the previous reports of Bi0.5K0.5TiO3– BiFeO3 (BKT – BFO) and Bi0.5K0.5TiO3 – BiCoO3 (BKT – BCO) solid solutions. The magnetic properties were investigated via unsaturated M-H loop, which showed the competition of paramagnetic and antiferromagnetic ordering in BKT – BFCO. However, differing from the BKT – BFO and BKT – BCO solid solutions, the unclear values of saturated magnetism in BKT – BFCO raised the unexplained question, which needed further studies.

scholarly journals Enhanced Magnetic Properties of Co-Doped BiFeO3 Thin Films via Structural Progression

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1798
Author(s):  
Liang Bai ◽  
Mingjie Sun ◽  
Wenjing Ma ◽  
Jinghai Yang ◽  
Junkai Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Sol Gel ◽  
Sem Images ◽  
Size Mismatch ◽  
Structural Progression ◽  
Gel Technique ◽  
Average Size ◽  
Perovskite Lattice ◽  
Co Doped

Co3+ doping in BiFeO3 is expected to be an effective method for improving its magnetic properties. In this work, pristine BiFeO3 (BFO) and doped BiFe1-xCoxO3 (BFCxO, x = 0.01, 0.03, 0.05, 0.07 and 0.10) composite thin films were successfully synthesized by a sol–gel technique. XRD and Raman spectra indicate that the Co3+ ions are substituted for the Fe3+ ion sites in the BFO rhombohedral lattice. Raman vibration of oxygen octahedron is obviously weakened due to the lattice distortion induced by the size mismatch between two B-site cations (Fe3+ and Co3+ ions), which has an impact on the magnetic properties of BFCxO. SEM images reveal a denser agglomeration in Co-doped samples. TEM results indicate that the average size of grains is reduced due to the Co3+ substitution. XPS measurements illustrate that the replacement of Fe3+ with Co3+ effectively suppresses the generation of oxygen defects and increases the concentration of Fe3+ ions at the B-site of perovskite lattice. Vibrating sample magnetometer (VSM) measurements show that the remanent magnetization (Mr) of BFC0.07O (3.6 emu/cm3) and the saturation magnetization (Ms) of BFC0.10O (48.84 emu/cm3) thin film both increase by approximately two times at room temperature, compared with that of the pure BFO counterpart.

Low temperature synthesis of ultrafine Pb(Zr, Ti)O3 powder by sol-gel combustion

1997 ◽  
Vol 12 (10) ◽  
pp. 2518-2521 ◽  
Author(s):  
J. Schäfer ◽  
W. Sigmund ◽  
S. Roy ◽  
F. Aldinger
Keyword(s):  
Lead Zirconate Titanate ◽  
Single Phase ◽  
Sol Gel ◽  
Combustion Process ◽  
Lead Zirconate ◽  
Homogeneous Distribution ◽  
Low Temperature Synthesis ◽  
Metal Nitrates ◽  
Gel Combustion ◽  
Diffusion Paths

Lead zirconate titanate powders are derived from a novel aqueous-based citrate-nitrate/oxynitrate sol-gel combustion process. Aqueous solutions of metal nitrates or oxynitrates are transformed into gels with citric acid under heating. The received gels undergo a self-propagating combustion reaction on heating to 180 °C and subsequently yield voluminous ashes. These ashes form single phase perovskite Pb(Zr0.53Ti0.47)O3 powder with a specific surface area of 8 m2/g upon calcination at 550 °C. The ashes show a homogeneous distribution of lead, zirconium, and titanium ions which guarantees short diffusion paths in solid state formation of PZT perovskite. The redox behavior of the gels was studied with the help of DTA experiments. Powders are characterized in terms of XRD, SEM, and EDX analysis.

Spectroscopic properties of nano-sized cerium-doped lutetium aluminum garnet phosphors via sol–gel combustion process

2007 ◽  
Vol 124 (1) ◽  
pp. 75-80 ◽  
Author(s):  
Xue-Jian Liu ◽  
Hui-Li Li ◽  
Rong-Jun Xie ◽  
Yi Zeng ◽  
Li-Ping Huang
Keyword(s):  
Sol Gel ◽  
Combustion Process ◽  
Spectroscopic Properties ◽  
Gel Combustion

Structural, electrical, dielectric and magnetic properties of Gd-Sn substituted Sr-hexaferrite synthesized by sol–gel combustion method

2015 ◽  
Vol 374 ◽  
pp. 173-178 ◽  
Author(s):  
Muhammad Naeem Ashiq ◽  
Sajeela Shakoor ◽  
Muhammad Najam-ul-Haq ◽  
Muhammad Farooq Warsi ◽  
Irshad Ali ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Sol Gel ◽  
Combustion Method ◽  
Gel Combustion ◽  
Gel Combustion Method

Effect of Annealing Temperature on the Structural and Magnetic Properties of Co-Doped TiO2 Nanoparticles via Complex-Polymer Sol–Gel Method

2012 ◽  
Vol 12 (2) ◽  
pp. 950-954 ◽  
Author(s):  
Masoud Karimipour ◽  
J. Magnus Wikberg ◽  
Nasser Shahtahmasebi ◽  
Mahmood Rezaee Rokn Abad ◽  
M. M. Bagheri-Mohagheghi ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Tio2 Nanoparticles ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Gel Method ◽  
Doped Tio2 ◽  
Sol Gel Method ◽  
Structural And Magnetic Properties ◽  
Complex Polymer ◽  
Co Doped
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