Magnetic property and 57Fe Mössbauer analysis of dilute Fe and Nb codoped SrTiO3-δ(STO) perovskites

Kiyoshi Nomura; Shuhei Yamakawa; Miki Kasari; Yuya Koike; Akio Nakanishi; Shiro Kubuki; Atsushi Okazawa

doi:10.1007/s10751-019-1681-9

Magnetic property and ⁵⁷Fe Mössbauer analysis of dilute Fe and Nb codoped SrTiO_3-δ(STO) perovskites

Kiyoshi Nomura^*, Shuhei Yamakawa, Miki Kasari, Yuya Koike, Akio Nakanishi, Shiro Kubuki, Atsushi Okazawa

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

Dilute Fe and Nb codoped SrTiO_3-δ (STO) perovskites were prepared by a complex formation and thermal decomposition method. The structure, magnetization properties and chemical states of Fe and Nb codoped STO perovskites were characterized by XRD, VSM and Mössbauer spectrometry. Mössbauer spectra of ⁵⁷Fe and Nb codoped STO perovskites consist of paramagnetic doublet and magnetic relaxation components. The 1% Fe + 5% Nb codoped STO sample showed the smallest lattice constant and the largest ferromagnetism among 0.5–4% Fe + 5% Nb codoped STO perovskites. The most distortion of cubic STO lattice and the largest magnetic relaxation in Mössbauer spectrum were observed for the 0.5% Fe and 5% Nb codoped STO perovskite. It is considered that diluted magnetism in this system is related with the deformation of cubic structure due to defects.

Original language	English
Article number	15
Journal	Hyperfine Interactions
Volume	241
Issue number	1
DOIs	https://doi.org/10.1007/s10751-019-1681-9
Publication status	Published - 2019 Dec 1
Externally published	Yes

Keywords

Diluted magnetism
Fe and Nb doped SrTiO
Mössbauer analysis
Perovskite oxide

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics
Condensed Matter Physics
Physical and Theoretical Chemistry

Access to Document

10.1007/s10751-019-1681-9

Cite this

@article{8a6d6686aa7c49c0951c2c5ca884437a,

title = "Magnetic property and 57Fe M{\"o}ssbauer analysis of dilute Fe and Nb codoped SrTiO3-δ(STO) perovskites",

abstract = "Dilute Fe and Nb codoped SrTiO3-δ (STO) perovskites were prepared by a complex formation and thermal decomposition method. The structure, magnetization properties and chemical states of Fe and Nb codoped STO perovskites were characterized by XRD, VSM and M{\"o}ssbauer spectrometry. M{\"o}ssbauer spectra of 57Fe and Nb codoped STO perovskites consist of paramagnetic doublet and magnetic relaxation components. The 1% Fe + 5% Nb codoped STO sample showed the smallest lattice constant and the largest ferromagnetism among 0.5–4% Fe + 5% Nb codoped STO perovskites. The most distortion of cubic STO lattice and the largest magnetic relaxation in M{\"o}ssbauer spectrum were observed for the 0.5% Fe and 5% Nb codoped STO perovskite. It is considered that diluted magnetism in this system is related with the deformation of cubic structure due to defects.",

keywords = "Diluted magnetism, Fe and Nb doped SrTiO, M{\"o}ssbauer analysis, Perovskite oxide",

author = "Kiyoshi Nomura and Shuhei Yamakawa and Miki Kasari and Yuya Koike and Akio Nakanishi and Shiro Kubuki and Atsushi Okazawa",

note = "Publisher Copyright: {\textcopyright} 2019, Springer Nature Switzerland AG.",

year = "2019",

month = dec,

day = "1",

doi = "10.1007/s10751-019-1681-9",

language = "English",

volume = "241",

journal = "Hyperfine Interaction",

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T1 - Magnetic property and 57Fe Mössbauer analysis of dilute Fe and Nb codoped SrTiO3-δ(STO) perovskites

AU - Nomura, Kiyoshi

AU - Yamakawa, Shuhei

AU - Kasari, Miki

AU - Koike, Yuya

AU - Nakanishi, Akio

AU - Kubuki, Shiro

AU - Okazawa, Atsushi

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Dilute Fe and Nb codoped SrTiO3-δ (STO) perovskites were prepared by a complex formation and thermal decomposition method. The structure, magnetization properties and chemical states of Fe and Nb codoped STO perovskites were characterized by XRD, VSM and Mössbauer spectrometry. Mössbauer spectra of 57Fe and Nb codoped STO perovskites consist of paramagnetic doublet and magnetic relaxation components. The 1% Fe + 5% Nb codoped STO sample showed the smallest lattice constant and the largest ferromagnetism among 0.5–4% Fe + 5% Nb codoped STO perovskites. The most distortion of cubic STO lattice and the largest magnetic relaxation in Mössbauer spectrum were observed for the 0.5% Fe and 5% Nb codoped STO perovskite. It is considered that diluted magnetism in this system is related with the deformation of cubic structure due to defects.

AB - Dilute Fe and Nb codoped SrTiO3-δ (STO) perovskites were prepared by a complex formation and thermal decomposition method. The structure, magnetization properties and chemical states of Fe and Nb codoped STO perovskites were characterized by XRD, VSM and Mössbauer spectrometry. Mössbauer spectra of 57Fe and Nb codoped STO perovskites consist of paramagnetic doublet and magnetic relaxation components. The 1% Fe + 5% Nb codoped STO sample showed the smallest lattice constant and the largest ferromagnetism among 0.5–4% Fe + 5% Nb codoped STO perovskites. The most distortion of cubic STO lattice and the largest magnetic relaxation in Mössbauer spectrum were observed for the 0.5% Fe and 5% Nb codoped STO perovskite. It is considered that diluted magnetism in this system is related with the deformation of cubic structure due to defects.

KW - Diluted magnetism

KW - Fe and Nb doped SrTiO

KW - Mössbauer analysis

KW - Perovskite oxide

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