Abstract
The rare-earth intermetallic compound PrMnSi 2 consists of two magnetic sublattices, i.e., layers of Mn atoms and layers of Pr atoms, which repeat in the (-Mn-Pr-Pr-) ∞ sequence. Electrical resistivity measurements were carried out for PrMnSi 2 between 2 and 350 K under various magnetic fields. PrMnSi 2 is a metal with two metal-to-metal transitions at ∼20 and ∼50 K, and its resistivity vs temperature curves show a significant hysteresis in the absence and presence of an external magnetic field. The resistivity is reduced by an external magnetic field, and this negative magnetoresistance reaches up to 47% at 9 T around 17 K where PrMnSi 2 is antiferromagnetic at zero field. The magnetoresistance vs temperature curves of PrMnSi 2 reveal three peaks at fields up to ∼3 T, which correspond to the three magnetic phase transitions of PrMnSi 2 observed from magnetic susceptibility and heat capacity measurements. The negative magnetoresistance and the resistivity hysteresis of PrMnSi 2 were accounted for by considering how the scattering of the electrons at the Fermi level is reduced by an applied field.
| Original language | English |
|---|---|
| Pages (from-to) | 6338-6341 |
| Number of pages | 4 |
| Journal | Chemistry of Materials |
| Volume | 17 |
| Issue number | 25 |
| DOIs | |
| Publication status | Published - Dec 13 2005 |
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ASJC Scopus subject areas
- Materials Chemistry
- Materials Science(all)
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Large negative magnetoresistance of the rare-earth transition-metal intermetallic compound PrMnSi 2 . / Kim, Sang Hwan; Seo, Dong Kyun; Kremer, Reinhard K.; Köhler, Jürgen; Villesuzanne, Antoine; Whangbo, Myung Hwan.
In: Chemistry of Materials, Vol. 17, No. 25, 13.12.2005, p. 6338-6341.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Large negative magnetoresistance of the rare-earth transition-metal intermetallic compound PrMnSi 2
AU - Kim, Sang Hwan
AU - Seo, Dong Kyun
AU - Kremer, Reinhard K.
AU - Köhler, Jürgen
AU - Villesuzanne, Antoine
AU - Whangbo, Myung Hwan
PY - 2005/12/13
Y1 - 2005/12/13
N2 - The rare-earth intermetallic compound PrMnSi 2 consists of two magnetic sublattices, i.e., layers of Mn atoms and layers of Pr atoms, which repeat in the (-Mn-Pr-Pr-) ∞ sequence. Electrical resistivity measurements were carried out for PrMnSi 2 between 2 and 350 K under various magnetic fields. PrMnSi 2 is a metal with two metal-to-metal transitions at ∼20 and ∼50 K, and its resistivity vs temperature curves show a significant hysteresis in the absence and presence of an external magnetic field. The resistivity is reduced by an external magnetic field, and this negative magnetoresistance reaches up to 47% at 9 T around 17 K where PrMnSi 2 is antiferromagnetic at zero field. The magnetoresistance vs temperature curves of PrMnSi 2 reveal three peaks at fields up to ∼3 T, which correspond to the three magnetic phase transitions of PrMnSi 2 observed from magnetic susceptibility and heat capacity measurements. The negative magnetoresistance and the resistivity hysteresis of PrMnSi 2 were accounted for by considering how the scattering of the electrons at the Fermi level is reduced by an applied field.
AB - The rare-earth intermetallic compound PrMnSi 2 consists of two magnetic sublattices, i.e., layers of Mn atoms and layers of Pr atoms, which repeat in the (-Mn-Pr-Pr-) ∞ sequence. Electrical resistivity measurements were carried out for PrMnSi 2 between 2 and 350 K under various magnetic fields. PrMnSi 2 is a metal with two metal-to-metal transitions at ∼20 and ∼50 K, and its resistivity vs temperature curves show a significant hysteresis in the absence and presence of an external magnetic field. The resistivity is reduced by an external magnetic field, and this negative magnetoresistance reaches up to 47% at 9 T around 17 K where PrMnSi 2 is antiferromagnetic at zero field. The magnetoresistance vs temperature curves of PrMnSi 2 reveal three peaks at fields up to ∼3 T, which correspond to the three magnetic phase transitions of PrMnSi 2 observed from magnetic susceptibility and heat capacity measurements. The negative magnetoresistance and the resistivity hysteresis of PrMnSi 2 were accounted for by considering how the scattering of the electrons at the Fermi level is reduced by an applied field.
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U2 - 10.1021/cm051669d
DO - 10.1021/cm051669d
M3 - Article
VL - 17
SP - 6338
EP - 6341
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 25
ER -