journal article·2022-03-01Open access

Magnetostriction and heat-capacity study on the metamagnetic phase transition of Dy2In1-xAlx alloys

Shiqi Wang, Pu Liu, Jiamin Chen, Weibin Cui

AIP Advances· Volume 12· Issue 3

Abstract

In Dy2In1-xAlx (x = 0, 0.2, 0.3 and 0.4) alloys, the hexagonal structure is gradually transformed into orthorhombic one with x = 0.3 as the critical composition. In Dy2In0.7Al0.3 alloy, the highest magnetic entropy change is accompanied with highest saturation magnetostriction ∼995 ppm under 7 T near phase transition temperature, indicating the typical strong magnetoelastic coupling. From heat-capacity (Cp) measurement, a sharp peak is observed on the Cp - T curves for Dy2In1-xAlx (x = 0, 0.2 and 0.3) alloys. Meanwhile, more Al substitution for In leads into the reduced density of state near Fermi level of each alloy judged from Cp/T - T2 curves. The maximized ΔTad for a field of 7 T is slightly increased from 6.5 K in Dy2In to 7 K in Dy2In0.7Al0.3.
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Research context

OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Magnetic Properties of Alloys · Rare-earth and actinide compounds

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education) and School of Materials Science and Engineering, Northeastern University 1 , Shenyang 110819, China

State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, CAS 2 , Beijing 100190, China

Funding

National Natural Science Foundation of China · Beijin Municipal Natural Science Foundation · Fundamental Research Funds for the Central Universities · The Open Fundings of the Key Laboratory of Solidification Processing in NWPU · State Key Laboratory of Advanced Metals and Materials · State Key Laboratory for Mechanical Behavior of Materials · The Joint Funding Between Shenyang National Laboratory for Materials Science and State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals · Liaoning Revitalization Talents Program

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