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journal article·2018-05-01Open access

Tuning the magnetic phase transition and the magnetocaloric properties of La0.7Ca0.3MnO3 compounds through Sm-doping

Tran Dang Thanh, Nguyen Thi Dung, Nguyen Van Dang, Le Viet Bau, Hong-Guang Piao, The Long Phan, Pham Duc Huyen Yen, Kieu Xuan Hau, Dong-Hyun Kim, Seong-Cho Yu

AIP Advances· Volume 8· Issue 5
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Source abstract

Abstract

In this work, we point out that the width and the nature of the magnetic phase transition, TC value, and as well as magnetocaloric effect in La0.7-xSmxCa0.3MnO3 compounds can be easily modified through Sm-doped into La-site. With an increasing Sm concentration, a systematic decrease in the magnetization, TC, and magnetic entropy change (ΔSm) are observed. The Arrott-plot proveds that the samples with x = 0 and 0.1 undergoing a first-order phase transition. Meanwhile, sample x = 0.2 undergoes a second-order phase transition, which exhibits a high value of the relative cooling power (81.5 J/kg at ΔH = 10 kOe). An analysis of the critical behavior based on the modified Arrott plots method has been done for sample x = 0.2. The results proved a coexistence of the long- and short-range interactions in La0.5Sm0.2Ca0.3MnO3 compound.
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Research context

OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Shape Memory Alloy Transformations · Advanced Condensed Matter Physics

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

Affiliations

Institute of Materials Science, Vietnam Academy of Science and Technology 1 , 18-Hoang Quoc Viet, Hanoi, Vietnam

Graduate University of Science and Technology, Vietnam Academy of Science and Technology 2 , 18-Hoang Quoc Viet, Hanoi, Viet Nam

Department of Physics and Technology, Thai Nguyen University of Science 3 , Thai Nguyen, Vietnam

Department of Engineering and Technology, Hong Duc University 4 , Thanh Hoa, Vietnam

Department of Physics, Chungbuk National University 5 , Cheongju 28644, South Korea

Department of Physics, Hankuk University of Foreign Studies 6 , Yongin 449-791, South Korea

Funding

Vietnam National Foundation for Science and Technology Development

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