Abstract
Measurements of the temperature dependence of the magnetic susceptibility of Sr14MnAs11 were made from ambient pressure to P≤20 kbars. At ambient pressure this compound is known to be a semiconductor with a Curie susceptibility down to as low as 5 K. It is found that raising the pressure to 7 kbars enhances the susceptibility somewhat and that at pressures above 10-11 kbars the susceptibility is enhanced by more than an order of magnitude and an ordered magnetic state occurs with a transition temperature that increases as the pressure is increased. This suggests that the applied pressure leads to a band-crossing transition from semiconductor to metal and a consequent exchange coupling of the Mn spins.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 4849-4852 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 47 |
| Issue number | 9 |
| DOIs | |
| State | Published - 1993 |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Pressure-induced ferromagnetic states in Sr14MnAs11. / Del Castillo, J.; Webb, D. J.; Kauzlarich, S. M.; Kuromoto, T. Y.
In: Physical Review B, Vol. 47, No. 9, 1993, p. 4849-4852.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Pressure-induced ferromagnetic states in Sr14MnAs11
AU - Del Castillo, J.
AU - Webb, D. J.
AU - Kauzlarich, S. M.
AU - Kuromoto, T. Y.
PY - 1993
Y1 - 1993
N2 - Measurements of the temperature dependence of the magnetic susceptibility of Sr14MnAs11 were made from ambient pressure to P≤20 kbars. At ambient pressure this compound is known to be a semiconductor with a Curie susceptibility down to as low as 5 K. It is found that raising the pressure to 7 kbars enhances the susceptibility somewhat and that at pressures above 10-11 kbars the susceptibility is enhanced by more than an order of magnitude and an ordered magnetic state occurs with a transition temperature that increases as the pressure is increased. This suggests that the applied pressure leads to a band-crossing transition from semiconductor to metal and a consequent exchange coupling of the Mn spins.
AB - Measurements of the temperature dependence of the magnetic susceptibility of Sr14MnAs11 were made from ambient pressure to P≤20 kbars. At ambient pressure this compound is known to be a semiconductor with a Curie susceptibility down to as low as 5 K. It is found that raising the pressure to 7 kbars enhances the susceptibility somewhat and that at pressures above 10-11 kbars the susceptibility is enhanced by more than an order of magnitude and an ordered magnetic state occurs with a transition temperature that increases as the pressure is increased. This suggests that the applied pressure leads to a band-crossing transition from semiconductor to metal and a consequent exchange coupling of the Mn spins.
UR - http://www.scopus.com/inward/record.url?scp=26744455810&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=26744455810&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.47.4849
DO - 10.1103/PhysRevB.47.4849
M3 - Article
AN - SCOPUS:26744455810
VL - 47
SP - 4849
EP - 4852
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 9
ER -