Magnetic phase diagram of S r2-x L axIr O4 synthesized by mechanical alloying

Kazumasa Horigane; M. Fujii; H. Okabe; Kaya Kobayashi; Rie Horie; H. Ishii; Y. F. Liao; Yoshihiro Kubozono; A. Koda; R. Kadono; Jun Akimitsu

doi:10.1103/PhysRevB.97.064425

Magnetic phase diagram of S r2-x L axIr O4 synthesized by mechanical alloying

Kazumasa Horigane, M. Fujii, H. Okabe, Kaya Kobayashi, Rie Horie, H. Ishii, Y. F. Liao, Yoshihiro Kubozono, A. Koda, R. Kadono, Jun Akimitsu

Research Institute for Interdisciplinary Science

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

8 Citations (Scopus)

Abstract

We report the crystal structure and physical properties of Sr2-xLaxIrO4 synthesized by mechanical alloying. The magnetic transition temperature TN and electrical resistivity decreased with increasing La doping, consistent with previous studies involving single-crystalline samples. We also identified the relationship between TN and tetragonal distortion (c/a) in this system. This result suggests that the magnetism of the Sr214 system is strongly correlated with its crystal structure. Zero-field muon spin rotation/relaxation studies revealed that short-range antiferromagnetic ordering is realized in Sr1.9La0.1IrO4; also, the spin-glass state is stabilized in the low-temperature region. The Ir moment estimated from the longitudinal field μSR results is 0.045μB, ten times smaller than that of Sr2IrO4 (∼0.4μB), indicating that electrons are introduced into the Ir atoms.

Original language	English
Article number	064425
Journal	Physical Review B
Volume	97
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.97.064425
Publication status	Published - Feb 28 2018

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Magnetic phase diagram of S r2-x L axIr O4 synthesized by mechanical alloying",

abstract = "We report the crystal structure and physical properties of Sr2-xLaxIrO4 synthesized by mechanical alloying. The magnetic transition temperature TN and electrical resistivity decreased with increasing La doping, consistent with previous studies involving single-crystalline samples. We also identified the relationship between TN and tetragonal distortion (c/a) in this system. This result suggests that the magnetism of the Sr214 system is strongly correlated with its crystal structure. Zero-field muon spin rotation/relaxation studies revealed that short-range antiferromagnetic ordering is realized in Sr1.9La0.1IrO4; also, the spin-glass state is stabilized in the low-temperature region. The Ir moment estimated from the longitudinal field μSR results is 0.045μB, ten times smaller than that of Sr2IrO4 (∼0.4μB), indicating that electrons are introduced into the Ir atoms.",

author = "Kazumasa Horigane and M. Fujii and H. Okabe and Kaya Kobayashi and Rie Horie and H. Ishii and Liao, {Y. F.} and Yoshihiro Kubozono and A. Koda and R. Kadono and Jun Akimitsu",

year = "2018",

month = feb,

day = "28",

doi = "10.1103/PhysRevB.97.064425",

language = "English",

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journal = "Physical Review B",

issn = "2469-9950",

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T1 - Magnetic phase diagram of S r2-x L axIr O4 synthesized by mechanical alloying

AU - Horigane, Kazumasa

AU - Fujii, M.

AU - Okabe, H.

AU - Kobayashi, Kaya

AU - Horie, Rie

AU - Ishii, H.

AU - Liao, Y. F.

AU - Kubozono, Yoshihiro

AU - Koda, A.

AU - Kadono, R.

AU - Akimitsu, Jun

PY - 2018/2/28

Y1 - 2018/2/28

N2 - We report the crystal structure and physical properties of Sr2-xLaxIrO4 synthesized by mechanical alloying. The magnetic transition temperature TN and electrical resistivity decreased with increasing La doping, consistent with previous studies involving single-crystalline samples. We also identified the relationship between TN and tetragonal distortion (c/a) in this system. This result suggests that the magnetism of the Sr214 system is strongly correlated with its crystal structure. Zero-field muon spin rotation/relaxation studies revealed that short-range antiferromagnetic ordering is realized in Sr1.9La0.1IrO4; also, the spin-glass state is stabilized in the low-temperature region. The Ir moment estimated from the longitudinal field μSR results is 0.045μB, ten times smaller than that of Sr2IrO4 (∼0.4μB), indicating that electrons are introduced into the Ir atoms.

AB - We report the crystal structure and physical properties of Sr2-xLaxIrO4 synthesized by mechanical alloying. The magnetic transition temperature TN and electrical resistivity decreased with increasing La doping, consistent with previous studies involving single-crystalline samples. We also identified the relationship between TN and tetragonal distortion (c/a) in this system. This result suggests that the magnetism of the Sr214 system is strongly correlated with its crystal structure. Zero-field muon spin rotation/relaxation studies revealed that short-range antiferromagnetic ordering is realized in Sr1.9La0.1IrO4; also, the spin-glass state is stabilized in the low-temperature region. The Ir moment estimated from the longitudinal field μSR results is 0.045μB, ten times smaller than that of Sr2IrO4 (∼0.4μB), indicating that electrons are introduced into the Ir atoms.

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