TY - JOUR
T1 - Stabilization of antiferromagnetic phases by magnetic field annealing in phase separated manganites Pr1-xCaxMnO3
AU - Dho, Joonghoe
AU - Hur, N. H.
PY - 2006/12
Y1 - 2006/12
N2 - We report a detailed study on the effects of magnetic field annealing on the magnetic and transport properties of single crystals of Pr1-xCaxMnO3 with x = 0.2 - 0.4. Below the Néel temperature, the samples with 0.3 ≤ x ≤ 0.35 undergo a typical metamagnetic transition from antiferromagnetic (AFM) to ferromagnetic (FM) upon applying a field of about 3 T. After the first metamagnetic transition, remarkably, the critical field of the second metamagnetic transition is increased by about 1 T, suggesting that the AFM phase is stabilized by the magnetic field-annealing. This field-stabilized AFM phase might be attributed to the coexistence of inhomogeneous FM and AFM phases near the phase boundary that are strongly dependent upon a magnetic field. A general phase diagram of Pr1-xCaxMnO3 is thus modified on the basis of irreversible magnetic transitions.
AB - We report a detailed study on the effects of magnetic field annealing on the magnetic and transport properties of single crystals of Pr1-xCaxMnO3 with x = 0.2 - 0.4. Below the Néel temperature, the samples with 0.3 ≤ x ≤ 0.35 undergo a typical metamagnetic transition from antiferromagnetic (AFM) to ferromagnetic (FM) upon applying a field of about 3 T. After the first metamagnetic transition, remarkably, the critical field of the second metamagnetic transition is increased by about 1 T, suggesting that the AFM phase is stabilized by the magnetic field-annealing. This field-stabilized AFM phase might be attributed to the coexistence of inhomogeneous FM and AFM phases near the phase boundary that are strongly dependent upon a magnetic field. A general phase diagram of Pr1-xCaxMnO3 is thus modified on the basis of irreversible magnetic transitions.
KW - A. Magnetically ordered materials
KW - D. Electronic transport
UR - http://www.scopus.com/inward/record.url?scp=33750366606&partnerID=8YFLogxK
U2 - 10.1016/j.ssc.2006.08.050
DO - 10.1016/j.ssc.2006.08.050
M3 - Article
AN - SCOPUS:33750366606
SN - 0038-1098
VL - 140
SP - 469
EP - 473
JO - Solid State Communications
JF - Solid State Communications
IS - 9-10
ER -