Specific-heat study of the UCoAl1-xGax system

I. K. Kozlovskaya; A. V. Andreev; J. Šebek; M. Tomida; Y. Shiokawa; Y. Homma; V. Sechovský

doi:10.1016/S0921-4526(98)00839-4

Specific-heat study of the UCoAl_1-xGa_x system

I. K. Kozlovskaya, A. V. Andreev, J. Šebek, M. Tomida, Y. Shiokawa, Y. Homma, V. Sechovský

Materials Processing and Characterization Division

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

Abstract

Specific-heat data for UCoAl_1-xGa_x solid solutions between the 5f-band metamagnet UCoAl and ferromagnetic UCoGa are presented. The decrease of the y-coefficient from 68 to 57 mJ mol^-1 K^-2 with x increasing up to 0.2 is attributed to suppression of spin fluctuations. For x between 0.60 and 0.70, γ drops from 55 to 37 mJ mol^-1 K^-2, although bulk magnetic properties vary monotonously with concentration. A possible explanation of this abrupt change in terms of percolation from a cluster to a homogenous ferromagnetic state is proposed.

Original language	English
Pages (from-to)	242-243
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	259-261
DOIs	https://doi.org/10.1016/S0921-4526(98)00839-4
Publication status	Published - 1999

Keywords

Metamagnetism
UCoAl
Uranium intermetallics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(98)00839-4

Cite this

@article{000685c37e724ab68ed6e5888e7dc05c,

title = "Specific-heat study of the UCoAl1-xGax system",

abstract = "Specific-heat data for UCoAl1-xGax solid solutions between the 5f-band metamagnet UCoAl and ferromagnetic UCoGa are presented. The decrease of the y-coefficient from 68 to 57 mJ mol-1 K-2 with x increasing up to 0.2 is attributed to suppression of spin fluctuations. For x between 0.60 and 0.70, γ drops from 55 to 37 mJ mol-1 K-2, although bulk magnetic properties vary monotonously with concentration. A possible explanation of this abrupt change in terms of percolation from a cluster to a homogenous ferromagnetic state is proposed.",

keywords = "Metamagnetism, UCoAl, Uranium intermetallics",

author = "Kozlovskaya, {I. K.} and Andreev, {A. V.} and J. {\v S}ebek and M. Tomida and Y. Shiokawa and Y. Homma and V. Sechovsk{\'y}",

note = "Funding Information: The work was supported by the Grant Agency of the Academy of Sciences of the Czech Republic (grant #A1010614), the Grant Agency of the Charles University (grant # 40/97).",

year = "1999",

doi = "10.1016/S0921-4526(98)00839-4",

language = "English",

volume = "259-261",

pages = "242--243",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

}

TY - JOUR

T1 - Specific-heat study of the UCoAl1-xGax system

AU - Kozlovskaya, I. K.

AU - Andreev, A. V.

AU - Šebek, J.

AU - Tomida, M.

AU - Shiokawa, Y.

AU - Homma, Y.

AU - Sechovský, V.

N1 - Funding Information: The work was supported by the Grant Agency of the Academy of Sciences of the Czech Republic (grant #A1010614), the Grant Agency of the Charles University (grant # 40/97).

PY - 1999

Y1 - 1999

N2 - Specific-heat data for UCoAl1-xGax solid solutions between the 5f-band metamagnet UCoAl and ferromagnetic UCoGa are presented. The decrease of the y-coefficient from 68 to 57 mJ mol-1 K-2 with x increasing up to 0.2 is attributed to suppression of spin fluctuations. For x between 0.60 and 0.70, γ drops from 55 to 37 mJ mol-1 K-2, although bulk magnetic properties vary monotonously with concentration. A possible explanation of this abrupt change in terms of percolation from a cluster to a homogenous ferromagnetic state is proposed.

AB - Specific-heat data for UCoAl1-xGax solid solutions between the 5f-band metamagnet UCoAl and ferromagnetic UCoGa are presented. The decrease of the y-coefficient from 68 to 57 mJ mol-1 K-2 with x increasing up to 0.2 is attributed to suppression of spin fluctuations. For x between 0.60 and 0.70, γ drops from 55 to 37 mJ mol-1 K-2, although bulk magnetic properties vary monotonously with concentration. A possible explanation of this abrupt change in terms of percolation from a cluster to a homogenous ferromagnetic state is proposed.

KW - Metamagnetism

KW - UCoAl

KW - Uranium intermetallics

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U2 - 10.1016/S0921-4526(98)00839-4

DO - 10.1016/S0921-4526(98)00839-4

M3 - Article

AN - SCOPUS:9344242396

VL - 259-261

SP - 242

EP - 243

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

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