Magnetic orientation and magnetic anisotropy in paramagnetic layered oxides containing rare-earth ions

Shigeru Horii, Atsushi Ishihara, Takayuki Fukushima, Tetsuo Uchikoshi, Hiraku Ogino, Tohru Suzuki, Yoshio Sakka, Jun Ichi Shimoyama, Kohji Kishio

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The magnetic anisotropies and easy axes of magnetization at room temperature were determined, and the effects of rare-earth (RE) ions were clarified for RE-based cuprates, RE-doped bismuth-based cuprates and RE-doped Bi-based cobaltite regarding the grain orientation by magnetic field. The easy axis, determined from the powder orientation in a static field of 10 T, depended qualitatively on the type of RE ion for all three systems. On the other hand, the magnetization measurement of the c-axis oriented powders, aligned in static or rotating fields, revealed that the type of RE ion strongly affected not only the directions of the easy axis but also the absolute value of magnetic anisotropy, and an appropriate choice of RE ion is required to minimize the magnetic field used for grain orientation. We also studied the possibility of triaxial grain orientation in high-critical-temperature superconductors by a modulated oval magnetic field. In particular, triaxial orientation was attempted in a high-oxygen-pressure phase of orthorhombic RE-based cuprates Y 2 Ba 4 Cu 7 O y . Although the experiment was performed in epoxy resin, which is not practical, in-plane alignment within 3° was achieved.

Original languageEnglish
Article number014604
JournalScience and Technology of Advanced Materials
Volume10
Issue number1
DOIs
Publication statusPublished - 2009 Mar 1
Externally publishedYes

Fingerprint

Magnetic anisotropy
Oxides
Rare earths
Ions
Magnetic fields
Powders
Magnetization
Epoxy Resins
Bismuth
Epoxy resins
Superconducting materials
Oxygen
Temperature

Keywords

  • layered oxides
  • magnetic alignment
  • magnetic anisotropy
  • rare-earth element

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Magnetic orientation and magnetic anisotropy in paramagnetic layered oxides containing rare-earth ions. / Horii, Shigeru; Ishihara, Atsushi; Fukushima, Takayuki; Uchikoshi, Tetsuo; Ogino, Hiraku; Suzuki, Tohru; Sakka, Yoshio; Shimoyama, Jun Ichi; Kishio, Kohji.

In: Science and Technology of Advanced Materials, Vol. 10, No. 1, 014604, 01.03.2009.

Research output: Contribution to journalArticle

Horii, Shigeru ; Ishihara, Atsushi ; Fukushima, Takayuki ; Uchikoshi, Tetsuo ; Ogino, Hiraku ; Suzuki, Tohru ; Sakka, Yoshio ; Shimoyama, Jun Ichi ; Kishio, Kohji. / Magnetic orientation and magnetic anisotropy in paramagnetic layered oxides containing rare-earth ions. In: Science and Technology of Advanced Materials. 2009 ; Vol. 10, No. 1.
@article{1fcef474b0a64c5a93719b2a310671b6,
title = "Magnetic orientation and magnetic anisotropy in paramagnetic layered oxides containing rare-earth ions",
abstract = "The magnetic anisotropies and easy axes of magnetization at room temperature were determined, and the effects of rare-earth (RE) ions were clarified for RE-based cuprates, RE-doped bismuth-based cuprates and RE-doped Bi-based cobaltite regarding the grain orientation by magnetic field. The easy axis, determined from the powder orientation in a static field of 10 T, depended qualitatively on the type of RE ion for all three systems. On the other hand, the magnetization measurement of the c-axis oriented powders, aligned in static or rotating fields, revealed that the type of RE ion strongly affected not only the directions of the easy axis but also the absolute value of magnetic anisotropy, and an appropriate choice of RE ion is required to minimize the magnetic field used for grain orientation. We also studied the possibility of triaxial grain orientation in high-critical-temperature superconductors by a modulated oval magnetic field. In particular, triaxial orientation was attempted in a high-oxygen-pressure phase of orthorhombic RE-based cuprates Y 2 Ba 4 Cu 7 O y . Although the experiment was performed in epoxy resin, which is not practical, in-plane alignment within 3° was achieved.",
keywords = "layered oxides, magnetic alignment, magnetic anisotropy, rare-earth element",
author = "Shigeru Horii and Atsushi Ishihara and Takayuki Fukushima and Tetsuo Uchikoshi and Hiraku Ogino and Tohru Suzuki and Yoshio Sakka and Shimoyama, {Jun Ichi} and Kohji Kishio",
year = "2009",
month = "3",
day = "1",
doi = "10.1088/1468-6996/10/1/014604",
language = "English",
volume = "10",
journal = "Science and Technology of Advanced Materials",
issn = "1468-6996",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - Magnetic orientation and magnetic anisotropy in paramagnetic layered oxides containing rare-earth ions

AU - Horii, Shigeru

AU - Ishihara, Atsushi

AU - Fukushima, Takayuki

AU - Uchikoshi, Tetsuo

AU - Ogino, Hiraku

AU - Suzuki, Tohru

AU - Sakka, Yoshio

AU - Shimoyama, Jun Ichi

AU - Kishio, Kohji

PY - 2009/3/1

Y1 - 2009/3/1

N2 - The magnetic anisotropies and easy axes of magnetization at room temperature were determined, and the effects of rare-earth (RE) ions were clarified for RE-based cuprates, RE-doped bismuth-based cuprates and RE-doped Bi-based cobaltite regarding the grain orientation by magnetic field. The easy axis, determined from the powder orientation in a static field of 10 T, depended qualitatively on the type of RE ion for all three systems. On the other hand, the magnetization measurement of the c-axis oriented powders, aligned in static or rotating fields, revealed that the type of RE ion strongly affected not only the directions of the easy axis but also the absolute value of magnetic anisotropy, and an appropriate choice of RE ion is required to minimize the magnetic field used for grain orientation. We also studied the possibility of triaxial grain orientation in high-critical-temperature superconductors by a modulated oval magnetic field. In particular, triaxial orientation was attempted in a high-oxygen-pressure phase of orthorhombic RE-based cuprates Y 2 Ba 4 Cu 7 O y . Although the experiment was performed in epoxy resin, which is not practical, in-plane alignment within 3° was achieved.

AB - The magnetic anisotropies and easy axes of magnetization at room temperature were determined, and the effects of rare-earth (RE) ions were clarified for RE-based cuprates, RE-doped bismuth-based cuprates and RE-doped Bi-based cobaltite regarding the grain orientation by magnetic field. The easy axis, determined from the powder orientation in a static field of 10 T, depended qualitatively on the type of RE ion for all three systems. On the other hand, the magnetization measurement of the c-axis oriented powders, aligned in static or rotating fields, revealed that the type of RE ion strongly affected not only the directions of the easy axis but also the absolute value of magnetic anisotropy, and an appropriate choice of RE ion is required to minimize the magnetic field used for grain orientation. We also studied the possibility of triaxial grain orientation in high-critical-temperature superconductors by a modulated oval magnetic field. In particular, triaxial orientation was attempted in a high-oxygen-pressure phase of orthorhombic RE-based cuprates Y 2 Ba 4 Cu 7 O y . Although the experiment was performed in epoxy resin, which is not practical, in-plane alignment within 3° was achieved.

KW - layered oxides

KW - magnetic alignment

KW - magnetic anisotropy

KW - rare-earth element

UR - http://www.scopus.com/inward/record.url?scp=80055091846&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80055091846&partnerID=8YFLogxK

U2 - 10.1088/1468-6996/10/1/014604

DO - 10.1088/1468-6996/10/1/014604

M3 - Article

VL - 10

JO - Science and Technology of Advanced Materials

JF - Science and Technology of Advanced Materials

SN - 1468-6996

IS - 1

M1 - 014604

ER -