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- Title
Integrating giant microwave absorption with magnetic refrigeration in one multifunctional intermetallic compound of LaFe<sub>11.6</sub>Si<sub>1.4</sub>C<sub>0.2</sub>H<sub>1.7</sub>.
- Authors
Ning-Ning Song; Ya-Jiao Ke; Hai-Tao Yang; Hu Zhang; Xiang-Qun Zhang; Bao-Gen Shen; Zhao-Hua Cheng
- Abstract
Both microwave absorption and magnetocaloric effect (MCE) are two essential performances of magnetic materials. We observe that LaFe11.6Si1.4C0.2H1.7 intermetallic compound exhibits the advantages of both giant microwave absorption exceeding -42 dB and magnetic entropy change of -20 Jkg-1K-1. The excellent electromagnetic wave absorption results from the large magnetic loss and dielectric loss as well as the efficient complementarity between relative permittivity and permeability. The giant MCE effect in this material provides an ideal technique for cooling the MAMs to avoid temperature increase and infrared radiation during microwave absorption. Our finding suggests that we can integrate the giant microwave absorption with magnetic refrigeration in one multifunctional material. This integration not only advances our understanding of the correlation between microwave absorption and MCE, but also can open a new avenue to exploit microwave devices and electromagnetic stealth.
- Subjects
DIELECTRIC loss; INTERMETALLIC compounds; ELECTROMAGNETIC waves; MICROWAVE devices; PERMITTIVITY
- Publication
Scientific Reports, 2013, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep02291