Mössbauer Study of the Impurity Effect of In3+ and Cr3+ in the High Temperature Phase of Fe3O4

Akiko Okamura; Midori Tanaka; Shin Nakamura; Kiiti Siratori; Kiiti Siratori

doi:10.1143/JPSJ.64.3484

Mössbauer Study of the Impurity Effect of In³⁺ and Cr³⁺ in the High Temperature Phase of Fe₃O₄

Akiko Okamura
, Midori Tanaka
, Shin Nakamura
, Kiiti Siratori
, Kiiti Siratori

Faculty of Science and Engineering

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

25 Scopus citations

Abstract

Impurity effects of In³⁺ and Cr³⁺ on the electronic states of the high temperature phase of Fe₃O₄ have been investigated by means of Mössbauer spectroscopy. The effects of the impurities were negligible for the A-site spectrum, whereas they were obvious for the B-site spectrum. We have classified the B-site Fe into several components taking account of the number of neighboring impurity ions as well as the angle between the direction of the hyperfine field and the principal axis of the electric field gradient. From the isomer shift and the hyperfine field, it was disclosed that the B-site Fe ions around the impurities attract electrons. The enlargement of quadrupole interaction below room temperature for In-substitution seems to correspond the enhancement of local lattice distortion or polaron.

Original language	English
Pages (from-to)	3484-3495
Number of pages	12
Journal	Journal of the Physical Society of Japan
Volume	64
Issue number	9
DOIs	https://doi.org/10.1143/JPSJ.64.3484
State	Published - Sep 1995

Keywords

CrFeO
electronic state
high temperature phase of FeO
InFeO
Mössbauer spectroscopy

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10.1143/JPSJ.64.3484

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title = "M{\"o}ssbauer Study of the Impurity Effect of In3+ and Cr3+ in the High Temperature Phase of Fe3O4",

abstract = "Impurity effects of In3+ and Cr3+ on the electronic states of the high temperature phase of Fe3O4 have been investigated by means of M{\"o}ssbauer spectroscopy. The effects of the impurities were negligible for the A-site spectrum, whereas they were obvious for the B-site spectrum. We have classified the B-site Fe into several components taking account of the number of neighboring impurity ions as well as the angle between the direction of the hyperfine field and the principal axis of the electric field gradient. From the isomer shift and the hyperfine field, it was disclosed that the B-site Fe ions around the impurities attract electrons. The enlargement of quadrupole interaction below room temperature for In-substitution seems to correspond the enhancement of local lattice distortion or polaron.",

keywords = "CrFeO, electronic state, high temperature phase of FeO, InFeO, M{\"o}ssbauer spectroscopy",

author = "Akiko Okamura and Midori Tanaka and Shin Nakamura and Kiiti Siratori and Kiiti Siratori",

year = "1995",

month = sep,

doi = "10.1143/JPSJ.64.3484",

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volume = "64",

pages = "3484--3495",

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issn = "0031-9015",

publisher = "The Physical Society of Japan",

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TY - JOUR

T1 - Mössbauer Study of the Impurity Effect of In3+ and Cr3+ in the High Temperature Phase of Fe3O4

AU - Okamura, Akiko

AU - Tanaka, Midori

AU - Nakamura, Shin

AU - Siratori, Kiiti

PY - 1995/9

Y1 - 1995/9

N2 - Impurity effects of In3+ and Cr3+ on the electronic states of the high temperature phase of Fe3O4 have been investigated by means of Mössbauer spectroscopy. The effects of the impurities were negligible for the A-site spectrum, whereas they were obvious for the B-site spectrum. We have classified the B-site Fe into several components taking account of the number of neighboring impurity ions as well as the angle between the direction of the hyperfine field and the principal axis of the electric field gradient. From the isomer shift and the hyperfine field, it was disclosed that the B-site Fe ions around the impurities attract electrons. The enlargement of quadrupole interaction below room temperature for In-substitution seems to correspond the enhancement of local lattice distortion or polaron.

AB - Impurity effects of In3+ and Cr3+ on the electronic states of the high temperature phase of Fe3O4 have been investigated by means of Mössbauer spectroscopy. The effects of the impurities were negligible for the A-site spectrum, whereas they were obvious for the B-site spectrum. We have classified the B-site Fe into several components taking account of the number of neighboring impurity ions as well as the angle between the direction of the hyperfine field and the principal axis of the electric field gradient. From the isomer shift and the hyperfine field, it was disclosed that the B-site Fe ions around the impurities attract electrons. The enlargement of quadrupole interaction below room temperature for In-substitution seems to correspond the enhancement of local lattice distortion or polaron.

KW - CrFeO

KW - electronic state

KW - high temperature phase of FeO

KW - InFeO

KW - Mössbauer spectroscopy

UR - https://www.scopus.com/pages/publications/21844511465

U2 - 10.1143/JPSJ.64.3484

DO - 10.1143/JPSJ.64.3484

M3 - 記事

AN - SCOPUS:21844511465

SN - 0031-9015

VL - 64

SP - 3484

EP - 3495

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 9

ER -

Mössbauer Study of the Impurity Effect of In³⁺ and Cr³⁺ in the High Temperature Phase of Fe₃O₄

Abstract

Keywords

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