Magnetic properties and Mössbauer spectra of nanosized CoFe2O4 powders

M. Grigorova; H. J. Blythe; V. Blaskov; V. Rusanov; V. Petkov; V. Masheva; D. Nihtianova; Ll M. Martinez; J. S. Muñoz; M. Mikhov

doi:10.1016/S0304-8853(97)01031-7

Magnetic properties and Mössbauer spectra of nanosized CoFe₂O₄ powders

M. Grigorova, H. J. Blythe, V. Blaskov, V. Rusanov, V. Petkov, V. Masheva, D. Nihtianova, Ll M. Martinez, J. S. Muñoz, M. Mikhov

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Abstract

CoFe₂O₄ fine powders with particle sizes between 43 Å (4.3 nm) and 465 Å (46.5 nm) were produced by a method of 'gentle' chemistry. It was found that a surface layer with thickness of about 10 Å does not contribute to the magnetization in the fields used. Maximum coercivity of 14 kOe and reduced remanence of 0.64 were measured at 5 K after magnetization in 50 kOe indicating a cubic-type magnetocrystalline anisotropy.

Original language	English
Pages (from-to)	163-172
Number of pages	10
Journal	Journal of Magnetism and Magnetic Materials
Volume	183
Issue number	1-2
DOIs	https://doi.org/10.1016/S0304-8853(97)01031-7
State	Published - Mar 7 1998

Keywords

Anisotropy - multi-axial
Ferrite
Fine particles
Superparamagnetism

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10.1016/S0304-8853(97)01031-7

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@article{1d7e2211d5674988a2698e32fc6de953,

title = "Magnetic properties and M{\"o}ssbauer spectra of nanosized CoFe2O4 powders",

abstract = "CoFe2O4 fine powders with particle sizes between 43 {\AA} (4.3 nm) and 465 {\AA} (46.5 nm) were produced by a method of 'gentle' chemistry. It was found that a surface layer with thickness of about 10 {\AA} does not contribute to the magnetization in the fields used. Maximum coercivity of 14 kOe and reduced remanence of 0.64 were measured at 5 K after magnetization in 50 kOe indicating a cubic-type magnetocrystalline anisotropy.",

keywords = "Anisotropy - multi-axial, Ferrite, Fine particles, Superparamagnetism",

author = "M. Grigorova and Blythe, {H. J.} and V. Blaskov and V. Rusanov and V. Petkov and V. Masheva and D. Nihtianova and Martinez, {Ll M.} and Mu{\~n}oz, {J. S.} and M. Mikhov",

note = "Funding Information: This work was supported by the Bulgarian Foundation for Scientific Investigations under contract Φ-453/1994. The authors are obliged to Dr. J. Geshev for critical reading the manuscript and for the figures processing. ",

year = "1998",

month = mar,

day = "7",

doi = "10.1016/S0304-8853(97)01031-7",

language = "English",

volume = "183",

pages = "163--172",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

number = "1-2",

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TY - JOUR

T1 - Magnetic properties and Mössbauer spectra of nanosized CoFe2O4 powders

AU - Grigorova, M.

AU - Blythe, H. J.

AU - Blaskov, V.

AU - Rusanov, V.

AU - Petkov, V.

AU - Masheva, V.

AU - Nihtianova, D.

AU - Martinez, Ll M.

AU - Muñoz, J. S.

AU - Mikhov, M.

N1 - Funding Information: This work was supported by the Bulgarian Foundation for Scientific Investigations under contract Φ-453/1994. The authors are obliged to Dr. J. Geshev for critical reading the manuscript and for the figures processing.

PY - 1998/3/7

Y1 - 1998/3/7

N2 - CoFe2O4 fine powders with particle sizes between 43 Å (4.3 nm) and 465 Å (46.5 nm) were produced by a method of 'gentle' chemistry. It was found that a surface layer with thickness of about 10 Å does not contribute to the magnetization in the fields used. Maximum coercivity of 14 kOe and reduced remanence of 0.64 were measured at 5 K after magnetization in 50 kOe indicating a cubic-type magnetocrystalline anisotropy.

AB - CoFe2O4 fine powders with particle sizes between 43 Å (4.3 nm) and 465 Å (46.5 nm) were produced by a method of 'gentle' chemistry. It was found that a surface layer with thickness of about 10 Å does not contribute to the magnetization in the fields used. Maximum coercivity of 14 kOe and reduced remanence of 0.64 were measured at 5 K after magnetization in 50 kOe indicating a cubic-type magnetocrystalline anisotropy.

KW - Anisotropy - multi-axial

KW - Ferrite

KW - Fine particles

KW - Superparamagnetism

UR - http://www.scopus.com/inward/record.url?scp=0032021487&partnerID=8YFLogxK

U2 - 10.1016/S0304-8853(97)01031-7

DO - 10.1016/S0304-8853(97)01031-7

M3 - Article

AN - SCOPUS:0032021487

SN - 0304-8853

VL - 183

SP - 163

EP - 172

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1-2

ER -

Magnetic properties and Mössbauer spectra of nanosized CoFe₂O₄ powders

Abstract

Keywords

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