Co doping enhanced giant magnetocaloric effect in Mn1-xCoxAs films epitaxied on GaAs (001)

A giant magnetocaloric effect was found in series of Mn1-xCoxAs films epitaxied on GaAs (001). The maximum magnetic entropy change caused by a magnetic field of 4 T is as large as 25 J/kg K around room temperature, which is about twice the value of pure MnAs film. The observed small thermal hysteresis is more suitable for practical application. Growing of layered Mn1-xCoxAs films with Co concentration changing gradually may draw layered active magnetic regenerator refrigerators closer to practical application. Our experimental result may provide the possibility for the combination of magnetocaloric effect and microelectronic circuitry.

Submitted by 阎军 (yanj@red.semi.ac.cn) on 2010-09-07T12:47:17Z No. of bitstreams: 1 Co doping enhanced giant magnetocaloric effect in Mn1-xCoxAs films epitaxied on GaAs (001).pdf: 615198 bytes, checksum: f182f40eb41a49571f0ee792710f86d3 (MD5)

Approved for entry into archive by 阎军(yanj@red.semi.ac.cn) on 2010-09-07T13:10:37Z (GMT) No. of bitstreams: 1 Co doping enhanced giant magnetocaloric effect in Mn1-xCoxAs films epitaxied on GaAs (001).pdf: 615198 bytes, checksum: f182f40eb41a49571f0ee792710f86d3 (MD5)

Made available in DSpace on 2010-09-07T13:10:37Z (GMT). No. of bitstreams: 1 Co doping enhanced giant magnetocaloric effect in Mn1-xCoxAs films epitaxied on GaAs (001).pdf: 615198 bytes, checksum: f182f40eb41a49571f0ee792710f86d3 (MD5) Previous issue date: 2010

其它