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 output: Contribution to journalArticle

3 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 languageEnglish
Article number064425
JournalPhysical Review B
Volume97
Issue number6
DOIs
Publication statusPublished - Feb 28 2018

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Mechanical alloying
alloying
Phase diagrams
Crystal structure
phase diagrams
muon spin rotation
electrical resistivity
crystal structure
Spin glass
Magnetism
spin glass
Superconducting transition temperature
Physical properties
physical properties
transition temperature
Doping (additives)
Crystalline materials
moments
Atoms
Electrons

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Magnetic phase diagram of S r2-x L axIr O4 synthesized by mechanical alloying. / Horigane, Kazumasa; Fujii, M.; Okabe, H.; Kobayashi, Kaya; Horie, Rie; Ishii, H.; Liao, Y. F.; Kubozono, Yoshihiro; Koda, A.; Kadono, R.; Akimitsu, Jun.

In: Physical Review B, Vol. 97, No. 6, 064425, 28.02.2018.

Research output: Contribution to journalArticle

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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

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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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