Abstract
The structural, magnetic and magnetocaloric properties of Ni2Mn1+xIn1-x alloys, prepared using an arc-melting furnace in an argon environment, have been studied for their potential application in cost-effective magnetic refrigeration technology. The room-temperature x-ray diffraction shows that the Ni2Mn1+xIn1-x alloys with 0 x 0.34 exhibit austenite cubic phase, whereas the alloys with x > 0.34 have mixed tetragonal martensite and cubic austenite phases. The Ni2Mn1.34In0.66 alloy shows a clear second-order phase transition with a Curie temperature of 305 K but its elemental composition is very close to the critical composition between first and second-order phase transitions. The calculated magnetic entropy change and relative cooling power of the Ni2Mn1.34In0.66 alloy measured at 3 T field are 4.5 J kg-1 K-1 and 201 J kg-1, respectively. The temperature dependent resistivity of Ni2Mn1.34In0.66 alloy measured at H = 0 Oe shows that the sample has a room temperature resistivity of 7 The absence of thermal and magnetic hysteresis due to second-order magnetic phase change, coupled with higher values of magnetic entropy change and relative cooling power, suggests that the Ni2Mn1.34In0.66 alloy has the potential for magnetic refrigeration.
| Original language | English (US) |
|---|---|
| Article number | 425305 |
| Journal | Journal of Physics D: Applied Physics |
| Volume | 52 |
| Issue number | 42 |
| DOIs | |
| State | Published - Aug 6 2019 |
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Keywords
- Heusler alloys
- magnetic entropy
- magnetic refrigeration
- magnetocaloric effect
- second-order phase transition
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Acoustics and Ultrasonics
- Surfaces, Coatings and Films
Cite this
Effect of partial substitution of in with Mn on the structural, magnetic, and magnetocaloric properties of Ni2Mn1+xIn1-x Heusler alloys. / Dahal, Bishnu; Huber, Carter; Zhang, Wenyong; Valloppilly, Shah; Huh, Yung; Kharel, Parashu; Sellmyer, David J.
In: Journal of Physics D: Applied Physics, Vol. 52, No. 42, 425305, 06.08.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of partial substitution of in with Mn on the structural, magnetic, and magnetocaloric properties of Ni2Mn1+xIn1-x Heusler alloys
AU - Dahal, Bishnu
AU - Huber, Carter
AU - Zhang, Wenyong
AU - Valloppilly, Shah
AU - Huh, Yung
AU - Kharel, Parashu
AU - Sellmyer, David J
PY - 2019/8/6
Y1 - 2019/8/6
N2 - The structural, magnetic and magnetocaloric properties of Ni2Mn1+xIn1-x alloys, prepared using an arc-melting furnace in an argon environment, have been studied for their potential application in cost-effective magnetic refrigeration technology. The room-temperature x-ray diffraction shows that the Ni2Mn1+xIn1-x alloys with 0 x 0.34 exhibit austenite cubic phase, whereas the alloys with x > 0.34 have mixed tetragonal martensite and cubic austenite phases. The Ni2Mn1.34In0.66 alloy shows a clear second-order phase transition with a Curie temperature of 305 K but its elemental composition is very close to the critical composition between first and second-order phase transitions. The calculated magnetic entropy change and relative cooling power of the Ni2Mn1.34In0.66 alloy measured at 3 T field are 4.5 J kg-1 K-1 and 201 J kg-1, respectively. The temperature dependent resistivity of Ni2Mn1.34In0.66 alloy measured at H = 0 Oe shows that the sample has a room temperature resistivity of 7 The absence of thermal and magnetic hysteresis due to second-order magnetic phase change, coupled with higher values of magnetic entropy change and relative cooling power, suggests that the Ni2Mn1.34In0.66 alloy has the potential for magnetic refrigeration.
AB - The structural, magnetic and magnetocaloric properties of Ni2Mn1+xIn1-x alloys, prepared using an arc-melting furnace in an argon environment, have been studied for their potential application in cost-effective magnetic refrigeration technology. The room-temperature x-ray diffraction shows that the Ni2Mn1+xIn1-x alloys with 0 x 0.34 exhibit austenite cubic phase, whereas the alloys with x > 0.34 have mixed tetragonal martensite and cubic austenite phases. The Ni2Mn1.34In0.66 alloy shows a clear second-order phase transition with a Curie temperature of 305 K but its elemental composition is very close to the critical composition between first and second-order phase transitions. The calculated magnetic entropy change and relative cooling power of the Ni2Mn1.34In0.66 alloy measured at 3 T field are 4.5 J kg-1 K-1 and 201 J kg-1, respectively. The temperature dependent resistivity of Ni2Mn1.34In0.66 alloy measured at H = 0 Oe shows that the sample has a room temperature resistivity of 7 The absence of thermal and magnetic hysteresis due to second-order magnetic phase change, coupled with higher values of magnetic entropy change and relative cooling power, suggests that the Ni2Mn1.34In0.66 alloy has the potential for magnetic refrigeration.
KW - Heusler alloys
KW - magnetic entropy
KW - magnetic refrigeration
KW - magnetocaloric effect
KW - second-order phase transition
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U2 - 10.1088/1361-6463/ab335a
DO - 10.1088/1361-6463/ab335a
M3 - Article
VL - 52
JO - Journal Physics D: Applied Physics
JF - Journal Physics D: Applied Physics
SN - 0022-3727
IS - 42
M1 - 425305
ER -