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Browsing by Author Nguyen, Huy Dan

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  • Long-range-ferromagnetism-and-magnetocaloric-effects-in-rapidly-quenched-Ni50-xCoxMn50-yAly-ribbons_2017_Journal-of-Science-Advanced-Materials-and-Dev.pdf.jpg
  • Article

  • Long-range ferromagnetism and magnetocaloric effects in rapidly quenched Ni50-xCoxMn50-yAly ribbons

    • Authors: Nguyen, Thi Mai; Nguyen, Hai Yen; Pham, Thi Thanh; Tran, Dang Thanh; Dinh, Chi Linh; Vu, Manh Quang; Nguyen, Mau Lam; Nguyen, Le Thi; Nguyen, Thi Thanh Huyen; Do, Thi Kim Anh; Nguyen, Huy Dan (2017)

  • Ni50-xCoxMn50-yAly(x=7 and 9; y=17, 18 and 19) alloy ribbons were prepared by melt-spinning with a tangential velocity of copper wheel of 40 m s-1. X-ray diffraction patterns reveal multi-crystalline phase behavior in the fabricated ribbons. The shape of thermomagnetization curves clearly depends on Co and Al concentrations. The Curie temperatures (TC) of the alloy ribbons strongly increase with increasing the Co concentration and slightly decrease with increasing the Al concentration. The martensitic-austenitic phase transition in the alloy ribbons can be manipulated by tuning Co and Al concentrations. The maximum magnetic entropy changejDSmjmaxof about 0.75 J kg-1 K-1 for a field ch...
  • Magnetocaloric effect and critical behavior in Fe-La-Zr rapidly quenched ribbons.pdf.jpg
  • Article

  • Magnetocaloric effect and critical behavior in Fe-La-Zr rapidly quenched ribbons

    • Authors: Kieu, Xuan Hau; Nguyen, Hoang Ha; Nguyen, Le Thi; Nguyen, Hai Yen; Pham, Thi Thanh; Pham, Duc Huyen Yen; Nguyen, Huy Ngoc; Tran, Dang Thanh; Koledov, Victor V.; Kim, Dong Hyun; Yu, Seong-Cho; Nguyen, Huy Dan (2019)

  • Fe90-xLaxZr10 (x ¼ 1 and 2) rapidly quenched ribbons with thickness of about 15 mm were prepared by the melt-spinning method. X-ray diffraction analysis shows that the structure of the ribbons is mostly amorphous. The Curie temperature, TC, of the alloy considerably increased, from ~262 K for x ¼ 1 to ~302 K for x ¼ 2, with increasing La-concentration. The maximum magnetic entropy change, jDSmjmax, of the alloy is about 1.1 J∙kg1K1 for a magnetic field change DH ¼ 12 kOe. A quite large refrigerant capacity (RC ~ 74 J∙kg1 for DH ¼ 12 kOe) near the room temperature region is obtained for the alloy. A thorough analysis on critical exponents around the ferromagnetic-paramagnetic phas...

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Browsing by Author Nguyen, Huy Dan

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 2 of 2
  • Long-range-ferromagnetism-and-magnetocaloric-effects-in-rapidly-quenched-Ni50-xCoxMn50-yAly-ribbons_2017_Journal-of-Science-Advanced-Materials-and-Dev.pdf.jpg
  • Article

  • Long-range ferromagnetism and magnetocaloric effects in rapidly quenched Ni50-xCoxMn50-yAly ribbons

    • Authors: Nguyen, Thi Mai; Nguyen, Hai Yen; Pham, Thi Thanh; Tran, Dang Thanh; Dinh, Chi Linh; Vu, Manh Quang; Nguyen, Mau Lam; Nguyen, Le Thi; Nguyen, Thi Thanh Huyen; Do, Thi Kim Anh; Nguyen, Huy Dan (2017)

  • Ni50-xCoxMn50-yAly(x=7 and 9; y=17, 18 and 19) alloy ribbons were prepared by melt-spinning with a tangential velocity of copper wheel of 40 m s-1. X-ray diffraction patterns reveal multi-crystalline phase behavior in the fabricated ribbons. The shape of thermomagnetization curves clearly depends on Co and Al concentrations. The Curie temperatures (TC) of the alloy ribbons strongly increase with increasing the Co concentration and slightly decrease with increasing the Al concentration. The martensitic-austenitic phase transition in the alloy ribbons can be manipulated by tuning Co and Al concentrations. The maximum magnetic entropy changejDSmjmaxof about 0.75 J kg-1 K-1 for a field ch...
  • Magnetocaloric effect and critical behavior in Fe-La-Zr rapidly quenched ribbons.pdf.jpg
  • Article

  • Magnetocaloric effect and critical behavior in Fe-La-Zr rapidly quenched ribbons

    • Authors: Kieu, Xuan Hau; Nguyen, Hoang Ha; Nguyen, Le Thi; Nguyen, Hai Yen; Pham, Thi Thanh; Pham, Duc Huyen Yen; Nguyen, Huy Ngoc; Tran, Dang Thanh; Koledov, Victor V.; Kim, Dong Hyun; Yu, Seong-Cho; Nguyen, Huy Dan (2019)

  • Fe90-xLaxZr10 (x ¼ 1 and 2) rapidly quenched ribbons with thickness of about 15 mm were prepared by the melt-spinning method. X-ray diffraction analysis shows that the structure of the ribbons is mostly amorphous. The Curie temperature, TC, of the alloy considerably increased, from ~262 K for x ¼ 1 to ~302 K for x ¼ 2, with increasing La-concentration. The maximum magnetic entropy change, jDSmjmax, of the alloy is about 1.1 J∙kg1K1 for a magnetic field change DH ¼ 12 kOe. A quite large refrigerant capacity (RC ~ 74 J∙kg1 for DH ¼ 12 kOe) near the room temperature region is obtained for the alloy. A thorough analysis on critical exponents around the ferromagnetic-paramagnetic phas...