NDLI: The Effect of Annealing on Phase Stability and Magnetic Properties of Hexaferrite BaFe$_{12}$ O $

Content Provider	Springer Nature Link
Author	Jaafar, A. Almisaeed, A. Souier, T. Bououdina, M.
Copyright Year	2016
Abstract	The hexaferrite BaFe$_{12}$ O $_{19}$ phase was synthesized through the mechanical alloying process followed by subsequent annealing. Rietveld refinements of as-milled powder annealed at 700 $^{∘}$C confirm the formation of the BaFe$_{12}$ O $_{19}$ phase with the presence of an important amount of the α-Fe$_{2}$ O $_{3}$ phase. Thus, prior mechanical milling shows much lower reaction temperature and less reaction time compared to conventional methods. Further annealing up to 900 and 1100 $^{∘}$C could not enable the formation of a single BaFe$_{12}$ O $_{19}$ phase, reaching an optimum phase composition ratio close to BaFe$_{12}$ O $_{19}$/ α-Fe$_{2}$ O $_{3}$ 70/30. The crystallite size was found to be in the nanoscale level but increases with increasing temperature (BaFe$_{12}$ O $_{19}$ = 20–62 nm; α-Fe$_{2}$ O $_{3}$ = 31–74 nm). SEM micrographs show that as the annealing temperature rises, the particles become more regular with sharp edges and hexagonal-like shapes. Magnetic measurements reveal that both M $_{s}$ and M $_{r}$ increase with annealing temperature to reach maximum values at 900 $^{∘}$C then remain unchanged, associated with phase composition. The coercivity H $_{c}$ increases upon annealing up to 700 $^{∘}$C to a much higher value, from 1.7 kOe for as-milled powder to 4.8 kOe. Its value then decreases, attributed to grain (particle) growth (formation of larger particles) due to high annealing temperatures: 900–1100 $^{∘}$C. The obtained composites show very interesting magnetic properties and can be considered for potential applications, such as hyperthermia, heavy metal and dye removal, and hard/soft magnetic composites.
Starting Page	2821
Ending Page	2827
Page Count	7
File Format	PDF
ISSN	15571939
Journal	Journal of Superconductivity and Novel Magnetism
Volume Number	29
Issue Number	11
e-ISSN	15571947
Language	English
Publisher	Springer US
Publisher Date	2016-07-08
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mechanical alloying XRD SEM Magnetic properties Strongly Correlated Systems, Superconductivity Magnetism, Magnetic Materials Condensed Matter Physics Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Magnetic, Micro-structural, and Optical Properties of Hexaferrite, BaFe$_{12}$O$_{19}$ Materials Synthesized by Salt Flux-Assisted Method

Thermal Treatment Influence on the Magnetic Properties and Degree of Orientation of BaFe$_{12}$O$_{19}$ Films

Synthesis, Characterization, and Dielectric Properties of BaFe$_{10}$(Mn$^{2+}$Zn$^{2+}$Zn$^{2+}$)O$_{19}$ Hexaferrite

Solvothermal Synthesis of Pure SrFe$_{12}$O$_{19}$ Hexaferrite Nanoplatelets

Poly(vinyl phosphonic acid) (PVPA)–BaFe$_{12}$O$_{19}$ Nanocomposite

The Synthesis of Single-Crystalline BaFe$_{12}$O$_{19}$ Nanoparticles by Molten-Salt Method with Surfactant NP-9

Towards Further Improvements of the Magnetization Parameters of B$_{2}$O$_{3}$-Doped BaFe$_{12}$O$_{19}$ Particles: Etching with Hydrochloric Acid

A Study of the Morlogical Properties of SrFe$_{12−x}$Co$_{x}$O$_{19}$ (x = 0, 0.1, 0.2) Hexaferrite Nanoparticles

Hydrothermal Synthesis of SrFe$_{12}$O$_{19}$ and Its Characterization

The Effect of Annealing on Phase Stability and Magnetic Properties of Hexaferrite BaFe$_{12}$ O $_{19}$

Similar Documents

Magnetic, Micro-structural, and Optical Properties of Hexaferrite, BaFe$_{12}$O$_{19}$ Materials Synthesized by Salt Flux-Assisted Method

Thermal Treatment Influence on the Magnetic Properties and Degree of Orientation of BaFe$_{12}$O$_{19}$ Films

Synthesis, Characterization, and Dielectric Properties of BaFe$_{10}$(Mn$^{2+}$Zn$^{2+}$Zn$^{2+}$)O$_{19}$ Hexaferrite

Solvothermal Synthesis of Pure SrFe$_{12}$O$_{19}$ Hexaferrite Nanoplatelets

Poly(vinyl phosphonic acid) (PVPA)–BaFe$_{12}$O$_{19}$ Nanocomposite

The Synthesis of Single-Crystalline BaFe$_{12}$O$_{19}$ Nanoparticles by Molten-Salt Method with Surfactant NP-9

Towards Further Improvements of the Magnetization Parameters of B$_{2}$O$_{3}$-Doped BaFe$_{12}$O$_{19}$ Particles: Etching with Hydrochloric Acid

A Study of the Morlogical Properties of SrFe$_{12−x}$Co$_{x}$O$_{19}$ (x = 0, 0.1, 0.2) Hexaferrite Nanoparticles

Hydrothermal Synthesis of SrFe$_{12}$O$_{19}$ and Its Characterization

The Effect of Annealing on Phase Stability and Magnetic Properties of Hexaferrite BaFe$_{12}$ O $_{19}$