Exploration of room-temperature magnetocaloric effect in nanogranular Ni-Cr thin films

被引：5
|
作者：
Alman, Vidya [1 ]
Ramakrishna, V. V. [1 ]
Battula, Sai Vittal [1 ]
Sahu, B. N. [1 ]
Annadi, Anil [1 ]
Singh, Vidyadhar [2 ]
Bohra, Murtaza [1 ]
机构：
[1] Mahindra Univ, Sch Engn MEC, Ecole Cent, Survey 62-1A, Hyderabad 500043, Telangana, India
[2] Jai Prakash Univ, Dept Phys, Chapra 841301, Bihar, India
来源：
MRS COMMUNICATIONS | 2023年 / 13卷 / 01期
关键词：
Magnetocaloric effect; Ni-Cr thin films; Segregation; Magnetic properties; Nanoscale; Thin film; Sputtering; MAGNETIC-PROPERTIES; NANOPARTICLES; ALLOY;
D O I：
10.1557/s43579-023-00321-w
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
From multicomponent high-entropy alloys (AlCoCrFeNi) through ternary alloys (CrFeNi) to binary (NiCr) alloys, Cr doping plays a critical role in altering the magnetocaloric properties of the resultant alloys. Magnetocaloric effect (MCE) of Ni100-xCrx (x = 5, 10, 15 at.%) nanogranular thin films were investigated by varying Cr concentration, which demonstrate near room-temperature magnetic entropy change (- delta S-M = 0.08 J/kg K) and relative cooling power (RCP = 25 J/kg) at 10 at.% Cr. The MCE properties are well predicted using a phenomenological model based on magnetization as a function of temperature, and they correlate well with experimentally measured magnetic isotherms.
引用
收藏
页码：117 / 120
页数：4
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