H-field induced changes in Ni-Zn ferrites by single mode microwave irradiation

Ramesh Peelamedu; Dinesh Kumar Agrawal; Rustum Roy; Stephen M. Copley

H-field induced changes in Ni-Zn ferrites by single mode microwave irradiation

Ramesh Peelamedu, Dinesh Kumar Agrawal, Rustum Roy, Stephen M. Copley

Materials Research Institute (MRI)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Ni_1-xZn_xFe₂O₄ with "x" values varying from x = 0,0.2, 0.4, 0.6, 0.8 and 1.0 were prepared using high purity NiO, ZnO and Fe₃O₄ in stoichiometric proportions. Sintering of these pellets was carried out in a conventional furnace at 1275°C, for 30 minutes. The sintered samples were post treated in a microwave H-field, and the structural and magnetic property differences between H-field treated and untreated samples were compared. The structural disorder was studied by XRD and Raman spectroscopy, and the magnetic property changes were studied by carrying out B-H measurement. Changes in crystal structure, magnetization, coercivity, and saturation magnetization values were determined. The results are explained based on our current understanding of magnetic decrystallization.

Original language	English (US)
Title of host publication	2004 AIChE Annual Meeting, Conference Proceedings
Pages	1739
Number of pages	1
State	Published - 2004
Event	2004 AIChE Annual Meeting - Austin, TX, United States Duration: Nov 7 2004 → Nov 12 2004

Other

Other	2004 AIChE Annual Meeting
Country/Territory	United States
City	Austin, TX
Period	11/7/04 → 11/12/04

All Science Journal Classification (ASJC) codes

Engineering(all)

Cite this

@inproceedings{d2069f7dbbb0464d9b8aa3a655b04daf,

title = "H-field induced changes in Ni-Zn ferrites by single mode microwave irradiation",

abstract = "Ni1-xZnxFe2O4 with {"}x{"} values varying from x = 0,0.2, 0.4, 0.6, 0.8 and 1.0 were prepared using high purity NiO, ZnO and Fe3O4 in stoichiometric proportions. Sintering of these pellets was carried out in a conventional furnace at 1275°C, for 30 minutes. The sintered samples were post treated in a microwave H-field, and the structural and magnetic property differences between H-field treated and untreated samples were compared. The structural disorder was studied by XRD and Raman spectroscopy, and the magnetic property changes were studied by carrying out B-H measurement. Changes in crystal structure, magnetization, coercivity, and saturation magnetization values were determined. The results are explained based on our current understanding of magnetic decrystallization.",

author = "Ramesh Peelamedu and Agrawal, {Dinesh Kumar} and Rustum Roy and Copley, {Stephen M.}",

year = "2004",

language = "English (US)",

pages = "1739",

booktitle = "2004 AIChE Annual Meeting, Conference Proceedings",

note = "2004 AIChE Annual Meeting ; Conference date: 07-11-2004 Through 12-11-2004",

}

TY - GEN

T1 - H-field induced changes in Ni-Zn ferrites by single mode microwave irradiation

AU - Peelamedu, Ramesh

AU - Agrawal, Dinesh Kumar

AU - Roy, Rustum

AU - Copley, Stephen M.

PY - 2004

Y1 - 2004

N2 - Ni1-xZnxFe2O4 with "x" values varying from x = 0,0.2, 0.4, 0.6, 0.8 and 1.0 were prepared using high purity NiO, ZnO and Fe3O4 in stoichiometric proportions. Sintering of these pellets was carried out in a conventional furnace at 1275°C, for 30 minutes. The sintered samples were post treated in a microwave H-field, and the structural and magnetic property differences between H-field treated and untreated samples were compared. The structural disorder was studied by XRD and Raman spectroscopy, and the magnetic property changes were studied by carrying out B-H measurement. Changes in crystal structure, magnetization, coercivity, and saturation magnetization values were determined. The results are explained based on our current understanding of magnetic decrystallization.

AB - Ni1-xZnxFe2O4 with "x" values varying from x = 0,0.2, 0.4, 0.6, 0.8 and 1.0 were prepared using high purity NiO, ZnO and Fe3O4 in stoichiometric proportions. Sintering of these pellets was carried out in a conventional furnace at 1275°C, for 30 minutes. The sintered samples were post treated in a microwave H-field, and the structural and magnetic property differences between H-field treated and untreated samples were compared. The structural disorder was studied by XRD and Raman spectroscopy, and the magnetic property changes were studied by carrying out B-H measurement. Changes in crystal structure, magnetization, coercivity, and saturation magnetization values were determined. The results are explained based on our current understanding of magnetic decrystallization.

UR - http://www.scopus.com/inward/record.url?scp=22544448122&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=22544448122&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:22544448122

SP - 1739

BT - 2004 AIChE Annual Meeting, Conference Proceedings

T2 - 2004 AIChE Annual Meeting

Y2 - 7 November 2004 through 12 November 2004

ER -

H-field induced changes in Ni-Zn ferrites by single mode microwave irradiation

Abstract

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