Structural modulation induced by the incommensurate antiferromagnetic phase transition in ZnCr2Se4

M. Hidaka; M. Yoshimura; N. Tokiwa; J. Akimitsu; Yong Jun Park; Jae Hyun Park; Sung Dae Ji; Ki Bong Lee

doi:10.1002/pssb.200301551

Structural modulation induced by the incommensurate antiferromagnetic phase transition in ZnCr₂Se₄

M. Hidaka, M. Yoshimura, N. Tokiwa, J. Akimitsu, Yong Jun Park, Jae Hyun Park, Sung Dae Ji, Ki Bong Lee

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

18 Citations (Scopus)

Abstract

The structural properties of normal-type spinel ZnCr₂Se₄ have been studied as a function of temperature by means of X-ray diffraction using synchrotron radiation. It is found that a structural phase transition from cubic to orthorhombic symmetry occurs at 22.5 K (T_c). It is also found that, below T_c, Se ions are cooperatively displaced in a pseudo-tetragonal (001) plane. Since the Cr³⁺ ion has no orbital angular momentum, a CrSe₆ octahedron is not distorted by a crystal field produced by surrounding Se^2- anions. It is interpreted that the pseudo-tetragonal displacements of Se ions are induced by magnetostriction among Cr^3- ions in CrSe₂ chains, in which Cr ions share two Se^2- with each other along 〈110〉.

Original language	English
Pages (from-to)	570-577
Number of pages	8
Journal	Physica Status Solidi (B) Basic Research
Volume	236
Issue number	3
DOIs	https://doi.org/10.1002/pssb.200301551
Publication status	Published - Apr 1 2003
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1002/pssb.200301551

Cite this

@article{14f9a70948a94e8e8bcc08f12e6c667f,

title = "Structural modulation induced by the incommensurate antiferromagnetic phase transition in ZnCr2Se4",

abstract = "The structural properties of normal-type spinel ZnCr2Se4 have been studied as a function of temperature by means of X-ray diffraction using synchrotron radiation. It is found that a structural phase transition from cubic to orthorhombic symmetry occurs at 22.5 K (Tc). It is also found that, below Tc, Se ions are cooperatively displaced in a pseudo-tetragonal (001) plane. Since the Cr3+ ion has no orbital angular momentum, a CrSe6 octahedron is not distorted by a crystal field produced by surrounding Se2- anions. It is interpreted that the pseudo-tetragonal displacements of Se ions are induced by magnetostriction among Cr3- ions in CrSe2 chains, in which Cr ions share two Se2- with each other along 〈110〉.",

author = "M. Hidaka and M. Yoshimura and N. Tokiwa and J. Akimitsu and Park, {Yong Jun} and Park, {Jae Hyun} and Ji, {Sung Dae} and Lee, {Ki Bong}",

year = "2003",

month = apr,

day = "1",

doi = "10.1002/pssb.200301551",

language = "English",

volume = "236",

pages = "570--577",

journal = "Physica Status Solidi (B): Basic Research",

issn = "0370-1972",

publisher = "Wiley-VCH Verlag",

number = "3",

}

TY - JOUR

T1 - Structural modulation induced by the incommensurate antiferromagnetic phase transition in ZnCr2Se4

AU - Hidaka, M.

AU - Yoshimura, M.

AU - Tokiwa, N.

AU - Akimitsu, J.

AU - Park, Yong Jun

AU - Park, Jae Hyun

AU - Ji, Sung Dae

AU - Lee, Ki Bong

PY - 2003/4/1

Y1 - 2003/4/1

N2 - The structural properties of normal-type spinel ZnCr2Se4 have been studied as a function of temperature by means of X-ray diffraction using synchrotron radiation. It is found that a structural phase transition from cubic to orthorhombic symmetry occurs at 22.5 K (Tc). It is also found that, below Tc, Se ions are cooperatively displaced in a pseudo-tetragonal (001) plane. Since the Cr3+ ion has no orbital angular momentum, a CrSe6 octahedron is not distorted by a crystal field produced by surrounding Se2- anions. It is interpreted that the pseudo-tetragonal displacements of Se ions are induced by magnetostriction among Cr3- ions in CrSe2 chains, in which Cr ions share two Se2- with each other along 〈110〉.

AB - The structural properties of normal-type spinel ZnCr2Se4 have been studied as a function of temperature by means of X-ray diffraction using synchrotron radiation. It is found that a structural phase transition from cubic to orthorhombic symmetry occurs at 22.5 K (Tc). It is also found that, below Tc, Se ions are cooperatively displaced in a pseudo-tetragonal (001) plane. Since the Cr3+ ion has no orbital angular momentum, a CrSe6 octahedron is not distorted by a crystal field produced by surrounding Se2- anions. It is interpreted that the pseudo-tetragonal displacements of Se ions are induced by magnetostriction among Cr3- ions in CrSe2 chains, in which Cr ions share two Se2- with each other along 〈110〉.

UR - http://www.scopus.com/inward/record.url?scp=0037998352&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037998352&partnerID=8YFLogxK

U2 - 10.1002/pssb.200301551

DO - 10.1002/pssb.200301551

M3 - Article

AN - SCOPUS:0037998352

SN - 0370-1972

VL - 236

SP - 570

EP - 577

JO - Physica Status Solidi (B): Basic Research

JF - Physica Status Solidi (B): Basic Research

IS - 3

ER -

Structural modulation induced by the incommensurate antiferromagnetic phase transition in ZnCr₂Se₄

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this