The low-temperature magnetostructure and magnetic field response of Pr0.9Ca0.1MnO3: the roles of Pr spins and magnetic phase separation
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The low-temperature magnetostructure and magnetic field response of Pr0.9Ca0.1MnO3 : the roles of Pr spins and magnetic phase separation. / Tikkanen, J.; Frontzek, M.; Hergert, W.; Ernst, A.; Paturi, P.; Udby, Linda.
In: Journal of Physics: Condensed Matter, Vol. 28, 036001, 03.2016.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The low-temperature magnetostructure and magnetic field response of Pr0.9Ca0.1MnO3
T2 - the roles of Pr spins and magnetic phase separation
AU - Tikkanen, J.
AU - Frontzek, M.
AU - Hergert, W.
AU - Ernst, A.
AU - Paturi, P.
AU - Udby, Linda
PY - 2016/3
Y1 - 2016/3
N2 - With the goal of elucidating the background of photoinduced ferromagnetism phenomena observed in the perovskite structured (Pr,Ca) manganites, the low-temperature magnetostructure of the material Pr0.9Ca0.1MnO3 was revised using cold neutron powder diffraction, SQUID magnetometry and ab initio calculations. Particular emphasis was placed on determining the presence of nanoscale magnetic phase separation. Previously publishedresults of a canted A-AFM average ground state were reproduced to a good precision both experimentally and theoretically, and complemented by investigating the effects of an applied magnetic field of 2.7 T on the magnetostructure. Explicit evidence of nanoscale magneticclusters in the material was obtained based on high-resolution neutron diffractograms. Along with several supporting arguments, we present this finding as a justification for extending the nanoscale magnetic phase separation model of manganites to the material under discussiondespite its very low Ca doping level in the context of the model. In the light of the new data, we also conclude that the low temperature magnetic moment of Pr must be ca. 300% larger than previously thought in this material, close to the high spin value of 2μB per formula unit.
AB - With the goal of elucidating the background of photoinduced ferromagnetism phenomena observed in the perovskite structured (Pr,Ca) manganites, the low-temperature magnetostructure of the material Pr0.9Ca0.1MnO3 was revised using cold neutron powder diffraction, SQUID magnetometry and ab initio calculations. Particular emphasis was placed on determining the presence of nanoscale magnetic phase separation. Previously publishedresults of a canted A-AFM average ground state were reproduced to a good precision both experimentally and theoretically, and complemented by investigating the effects of an applied magnetic field of 2.7 T on the magnetostructure. Explicit evidence of nanoscale magneticclusters in the material was obtained based on high-resolution neutron diffractograms. Along with several supporting arguments, we present this finding as a justification for extending the nanoscale magnetic phase separation model of manganites to the material under discussiondespite its very low Ca doping level in the context of the model. In the light of the new data, we also conclude that the low temperature magnetic moment of Pr must be ca. 300% larger than previously thought in this material, close to the high spin value of 2μB per formula unit.
U2 - 10.1088/0953-8984/28/3/036001
DO - 10.1088/0953-8984/28/3/036001
M3 - Tidsskriftartikel
C2 - 26732100
VL - 28
JO - Journal of Physics: Condensed Matter
JF - Journal of Physics: Condensed Matter
SN - 0953-8984
M1 - 036001
ER -
ID: 167549074