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Sharma A, Godara SK, Maji PK, Srivastava AK. Influence of Temperature on Structural and Magnetic Properties of Gd
3
Al
x
Fe
5−
x
O
12
(
x
= 2). CRYSTAL RESEARCH AND TECHNOLOGY 2021. [DOI: 10.1002/crat.202100109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Anjori Sharma
- Department of Physics Lovely Professional University Phagwara Punjab 144411 India
| | - Sachin Kumar Godara
- Department of Chemistry Guru Nanak Dev University Amritsar Punjab 143005 India
| | - Pradip K. Maji
- Department of Polymer and Process Engineering IIT Roorkee Saharanpur Campus Uttar Pradesh 247001 India
| | - A. K. Srivastava
- Department of Physics Lovely Professional University Phagwara Punjab 144411 India
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Fopase R, Saxena V, Seal P, Borah J, Pandey LM. Yttrium iron garnet for hyperthermia applications: Synthesis, characterization and in-vitro analysis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 116:111163. [DOI: 10.1016/j.msec.2020.111163] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 01/09/2023]
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Lafta SH. Effect of pH on Structural, Magnetic and FMR Properties of Hydrothermally Prepared Nano Ni Ferrite. OPEN CHEM 2017. [DOI: 10.1515/chem-2017-0007] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractNano nickel ferrite particles were prepared at pH values 1.5, 4, 7, 10, 13 by a hydrothermal method using metal chlorides and NaOH as an oxidant and solution basicity controller. There is a phase transition from hematite to spinel ferrite that begins when the pH reaches 4. The lowest crystallite size (4 nm) was associated with a highest lattice constant (8.345 Å), at pH=4. Whereas maximum crystallite size 64.5 nm corresponds lattice constant of 8.298 Å at pH=10. The highest magnetization (48 emu/g) value was achieved for the sample prepared at pH=7, which at the same time has a lower coercivity. The samples synthesized at pH ≥4 show superparamagnetic behavior owing to its low particle size and to zero field cooling and field cooling measurements. The ferromagnetic resonance (FMR) cavity tests analysis show that the broadened linewidth (770 Oe) and high imaginary permeability or high microwave absorption which is linked to high magnetization and low coercivity of superparamagnetic particles and their aggregation. There was a shift in the resonance field due to internal fields and cation distribution.
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Affiliation(s)
- Sadeq H. Lafta
- University of Technology/Applied Science Dep., Baghdad-Iraq
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