Structure and magnetic properties of K2NiFe3.5v 3.5O16 with the hollandite structure

W. Fan; J. Ding; J. B. Yi; G. V.S. Rao; B. V.R. Chowdari

doi:10.1016/j.jmmm.2003.12.864

Structure and magnetic properties of K₂NiFe_3.5v _3.5O₁₆ with the hollandite structure

W. Fan
, J. Ding^*
, J. B. Yi
, G. V.S. Rao
, B. V.R. Chowdari

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

K₂NiFe_3.5V_3.5O₁₆ with the hollandite structure was prepared by conventional ceramic method. The specimen exhibited the ferrimagnetic behaviour with a relatively high Curie temperature of approximately 870 K and a room temperature saturation magnetization of ∼ 15 emu/g. A maximum of magnetization appeared at 120-150 K and a relatively abrupt decrease in magnetization was detected below 100 K, accompanied by a change of slope in temperature-dependent resistance. The Mössbauer spectra could be well fitted with two sextets in the temperature range of 78-290 K. A change in average hyperfine field and chemical shift was observed below 150 K.

Original language	English
Pages (from-to)	e1801-e1803
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.864
State	Published - May 2004
Externally published	Yes

Keywords

Hollandite
Magnetic properties
Mössbauer spectroscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2003.12.864

Cite this

@article{55feb936f6fe4ef993690b799030d537,

title = "Structure and magnetic properties of K2NiFe3.5v 3.5O16 with the hollandite structure",

abstract = "K2NiFe3.5V3.5O16 with the hollandite structure was prepared by conventional ceramic method. The specimen exhibited the ferrimagnetic behaviour with a relatively high Curie temperature of approximately 870 K and a room temperature saturation magnetization of ∼ 15 emu/g. A maximum of magnetization appeared at 120-150 K and a relatively abrupt decrease in magnetization was detected below 100 K, accompanied by a change of slope in temperature-dependent resistance. The M{\"o}ssbauer spectra could be well fitted with two sextets in the temperature range of 78-290 K. A change in average hyperfine field and chemical shift was observed below 150 K.",

keywords = "Hollandite, Magnetic properties, M{\"o}ssbauer spectroscopy",

author = "W. Fan and J. Ding and Yi, \{J. B.\} and Rao, \{G. V.S.\} and Chowdari, \{B. V.R.\}",

year = "2004",

month = may,

doi = "10.1016/j.jmmm.2003.12.864",

language = "English",

volume = "272-276",

pages = "e1801--e1803",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

number = "SUPPL. 1",

}

TY - JOUR

T1 - Structure and magnetic properties of K2NiFe3.5v 3.5O16 with the hollandite structure

AU - Fan, W.

AU - Ding, J.

AU - Yi, J. B.

AU - Rao, G. V.S.

AU - Chowdari, B. V.R.

PY - 2004/5

Y1 - 2004/5

N2 - K2NiFe3.5V3.5O16 with the hollandite structure was prepared by conventional ceramic method. The specimen exhibited the ferrimagnetic behaviour with a relatively high Curie temperature of approximately 870 K and a room temperature saturation magnetization of ∼ 15 emu/g. A maximum of magnetization appeared at 120-150 K and a relatively abrupt decrease in magnetization was detected below 100 K, accompanied by a change of slope in temperature-dependent resistance. The Mössbauer spectra could be well fitted with two sextets in the temperature range of 78-290 K. A change in average hyperfine field and chemical shift was observed below 150 K.

AB - K2NiFe3.5V3.5O16 with the hollandite structure was prepared by conventional ceramic method. The specimen exhibited the ferrimagnetic behaviour with a relatively high Curie temperature of approximately 870 K and a room temperature saturation magnetization of ∼ 15 emu/g. A maximum of magnetization appeared at 120-150 K and a relatively abrupt decrease in magnetization was detected below 100 K, accompanied by a change of slope in temperature-dependent resistance. The Mössbauer spectra could be well fitted with two sextets in the temperature range of 78-290 K. A change in average hyperfine field and chemical shift was observed below 150 K.

KW - Hollandite

KW - Magnetic properties

KW - Mössbauer spectroscopy

UR - https://www.scopus.com/pages/publications/23144439570

U2 - 10.1016/j.jmmm.2003.12.864

DO - 10.1016/j.jmmm.2003.12.864

M3 - Article

AN - SCOPUS:23144439570

SN - 0304-8853

VL - 272-276

SP - e1801-e1803

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - SUPPL. 1

ER -