Critical behavior of the ferromagnetic metal La3CrAs5 with quasi-one-dimensional spin chains

Duan，Lei1; Wang，Xian Cheng2,3; Zhang，Jun2,3; Zhao，Jian Fa2,3; Zhao，Zhiwei1; Xiao，Changjiang1; Guan，Chunlong1; Wang，Shun1; Shi，Liping4; Zhu，Jinlong5; Jin，Chang Qing2,3,6

2022-06-05

10.1016/j.jallcom.2022.164214

JOURNAL OF ALLOYS AND COMPOUNDS   影响因子和分区

0925-8388

1873-4669

In this work, we report on the critical properties of ferromagnetic metal LaCrAs, where the face-sharing CrAs octahedral chains are separated by a large distance. Bulk magnetization measurements near the Curie temperature T are carried out in details. Then we used modified Arrott plot, Kouvel-Fisher method and critical isotherm analysis to analyze the isothermal magnetization curves, and thus obtained a set of precise and self-consistent critical exponents (β, γ and δ), which are close to the theoretical values of chiral XY model. In addition, the scaling equation is followed by the magnetization-field-temperature curves, confirming the reliability of these critical exponents. Furthermore, the magnetic exchange distance, decaying as J(r) ~ r, indicates the predominant long-range magnetic coupling in LaCrAs. Furthermore, the magnetic entropy change − ΔS around the T reaches a maximum value, such as−ΔS is 1.23 J/kg-K for H = 50 kOe, and the relative cooling power (RCP) is 51.70 J/kg at H = 50 kOe. Our results reveal that the magnetic critical behavior in LaCrAs should be attributed to the synergistic action between the direct magnetic exchange and the itinerant electron mediated indirect spin exchange, and the interchain spin coupling should be greatly enhanced via the itinerant electrons and then leads to the increase of the long-range magnetic ordering temperature.

Critical behavior Ferromagnetic metal Itinerant electron One-dimensional spin chain

SCI ; EI

英语

其他

Doctoral Fund of Henan University of Technology[2020BS029] ; National Key R&D Program of China[2018YFA0305700] ; National Natural Science Foundation of China[11974410,11820101003] ; Stable Support Plan Program of Shenzhen Natural Science Fund[202009251 52415003] ; Science Foundation of National Key Laboratory of Science and Technology on Advanced Composites in Special Environments[614295203114] ; Natural Science Foundation from the Department of Science & Technology of Henan Province[202102210217,202300410106]

Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering

Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000819833600002

ELSEVIER SCIENCE SA

20220811684551

Chromium compounds ; Ferromagnetism ; Isotherms ; Lanthanum compounds ; Magnetization ; Spin dynamics

Magnetism: Basic Concepts and Phenomena:701.2 ; Magnetic Materials:708.4 ; Atomic and Molecular Physics:931.3

MATERIALS SCIENCE

2-s2.0-85124835107

Scopus

1.School of Materials Science and Engineering,Henan University of Technology,Zhengzhou,450007,China
2.Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing,100190,China
3.School of Physics,University of Chinese Academy of Sciences,Beijing,100190,China
4.National Key Laboratory of Science and Technology on Advanced Composites in Special Environments,Harbin Institute of Technology,China
5.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
6.Songshan Lake Materials Laboratory,Dongguan,Guangdong,523808,China

Duan，Lei,Wang，Xian Cheng,Zhang，Jun,et al. Critical behavior of the ferromagnetic metal La3CrAs5 with quasi-one-dimensional spin chains[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,905.

Duan，Lei.,Wang，Xian Cheng.,Zhang，Jun.,Zhao，Jian Fa.,Zhao，Zhiwei.,...&Jin，Chang Qing.(2022).Critical behavior of the ferromagnetic metal La3CrAs5 with quasi-one-dimensional spin chains.JOURNAL OF ALLOYS AND COMPOUNDS,905.

Duan，Lei,et al."Critical behavior of the ferromagnetic metal La3CrAs5 with quasi-one-dimensional spin chains".JOURNAL OF ALLOYS AND COMPOUNDS 905(2022).