Spin-glass behavior in CeCu2-type uranium compound U 2AuGa3

D. X. Li; T. Yamamura; S. Nimori; K. Yubuta; Y. Shiokawa

doi:10.1063/1.2081130

Spin-glass behavior in CeCu₂-type uranium compound U ₂AuGa₃

D. X. Li, T. Yamamura, S. Nimori, K. Yubuta, Y. Shiokawa

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

18 Citations (Scopus)

Abstract

We present the results of ac and dc susceptibility, magnetization, magnetic relaxation, specific heat, and electrical resistivity measurements on U2 AuGa3, an orthorhombic CeCu2 -type nonmagnetic atom disorder system. These data clearly indicate that U2 AuGa3 undergoes a spin glass phase transition at a static freezing temperature Ts =23.6 K, in spite of the lack of triangular magnetic structure. It is observed that the variation of the characteristic temperature Tir (the bifurcation point between field-cooled and zero-field-cooled susceptibilities) with applied field H for U2 AuGa3 is not consistent with the "AT line," but follows a Tir ∝- H25 law. The observed spin glass behavior and the formation of frustrated magnetic interactions in U2 AuGa3 are discussed in a magnetic cluster model.

Original language	English
Article number	142505
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	87
Issue number	14
DOIs	https://doi.org/10.1063/1.2081130
Publication status	Published - 2005 Oct 3

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.2081130

Fingerprint Dive into the research topics of 'Spin-glass behavior in CeCu2-type uranium compound U 2AuGa3'. Together they form a unique fingerprint.

Cite this

@article{ca743cc0121c44d2966cf58830e0c260,

title = "Spin-glass behavior in CeCu2-type uranium compound U 2AuGa3",

abstract = "We present the results of ac and dc susceptibility, magnetization, magnetic relaxation, specific heat, and electrical resistivity measurements on U2 AuGa3, an orthorhombic CeCu2 -type nonmagnetic atom disorder system. These data clearly indicate that U2 AuGa3 undergoes a spin glass phase transition at a static freezing temperature Ts =23.6 K, in spite of the lack of triangular magnetic structure. It is observed that the variation of the characteristic temperature Tir (the bifurcation point between field-cooled and zero-field-cooled susceptibilities) with applied field H for U2 AuGa3 is not consistent with the {"}AT line,{"} but follows a Tir ∝- H25 law. The observed spin glass behavior and the formation of frustrated magnetic interactions in U2 AuGa3 are discussed in a magnetic cluster model.",

author = "Li, {D. X.} and T. Yamamura and S. Nimori and K. Yubuta and Y. Shiokawa",

year = "2005",

month = oct,

day = "3",

doi = "10.1063/1.2081130",

language = "English",

volume = "87",

pages = "1--3",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "14",

}

TY - JOUR

T1 - Spin-glass behavior in CeCu2-type uranium compound U 2AuGa3

AU - Li, D. X.

AU - Yamamura, T.

AU - Nimori, S.

AU - Yubuta, K.

AU - Shiokawa, Y.

PY - 2005/10/3

Y1 - 2005/10/3

N2 - We present the results of ac and dc susceptibility, magnetization, magnetic relaxation, specific heat, and electrical resistivity measurements on U2 AuGa3, an orthorhombic CeCu2 -type nonmagnetic atom disorder system. These data clearly indicate that U2 AuGa3 undergoes a spin glass phase transition at a static freezing temperature Ts =23.6 K, in spite of the lack of triangular magnetic structure. It is observed that the variation of the characteristic temperature Tir (the bifurcation point between field-cooled and zero-field-cooled susceptibilities) with applied field H for U2 AuGa3 is not consistent with the "AT line," but follows a Tir ∝- H25 law. The observed spin glass behavior and the formation of frustrated magnetic interactions in U2 AuGa3 are discussed in a magnetic cluster model.

AB - We present the results of ac and dc susceptibility, magnetization, magnetic relaxation, specific heat, and electrical resistivity measurements on U2 AuGa3, an orthorhombic CeCu2 -type nonmagnetic atom disorder system. These data clearly indicate that U2 AuGa3 undergoes a spin glass phase transition at a static freezing temperature Ts =23.6 K, in spite of the lack of triangular magnetic structure. It is observed that the variation of the characteristic temperature Tir (the bifurcation point between field-cooled and zero-field-cooled susceptibilities) with applied field H for U2 AuGa3 is not consistent with the "AT line," but follows a Tir ∝- H25 law. The observed spin glass behavior and the formation of frustrated magnetic interactions in U2 AuGa3 are discussed in a magnetic cluster model.

UR - http://www.scopus.com/inward/record.url?scp=28444487474&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=28444487474&partnerID=8YFLogxK

U2 - 10.1063/1.2081130

DO - 10.1063/1.2081130

M3 - Article

AN - SCOPUS:28444487474

VL - 87

SP - 1

EP - 3

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 14

M1 - 142505

ER -

Spin-glass behavior in CeCu₂-type uranium compound U ₂AuGa₃

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint Dive into the research topics of 'Spin-glass behavior in CeCu<sub>2</sub>-type uranium compound U <sub>2</sub>AuGa<sub>3</sub>'. Together they form a unique fingerprint.

Cite this