TY - JOUR
T1 - Magnetic phase transitions in SmCoAsO
AU - Awana, V. P.S.
AU - Nowik, I.
AU - Pal, Anand
AU - Yamaura, K.
AU - Takayama-Muromachi, E.
AU - Felner, I.
PY - 2010/6/1
Y1 - 2010/6/1
N2 - Magnetization, x-ray diffraction, and specific-heat measurements reveal that SmCoAsO undergoes three magnetic phase transitions. A ferromagnetic transition attributed to the Co ions, emerges at TC =57 K with a small saturation moment of ∼0.15 μB/Co. Reorientation of the Co moment to an antiferromagnetic state is obtained at TN2 =45 K. The relative high paramagnetic effective moment Peff =1.57 μB/Co indicates an itinerant ferromagnetic state of the Co sublattice. The third magnetic transition at TN1=5 K is observed clearly in the specific-heat study only. Both magnetic and F 57 e Mossbauer studies show that substitution of small quantities of Fe for Co was unsuccessful.
AB - Magnetization, x-ray diffraction, and specific-heat measurements reveal that SmCoAsO undergoes three magnetic phase transitions. A ferromagnetic transition attributed to the Co ions, emerges at TC =57 K with a small saturation moment of ∼0.15 μB/Co. Reorientation of the Co moment to an antiferromagnetic state is obtained at TN2 =45 K. The relative high paramagnetic effective moment Peff =1.57 μB/Co indicates an itinerant ferromagnetic state of the Co sublattice. The third magnetic transition at TN1=5 K is observed clearly in the specific-heat study only. Both magnetic and F 57 e Mossbauer studies show that substitution of small quantities of Fe for Co was unsuccessful.
UR - https://www.scopus.com/pages/publications/77955864810
U2 - 10.1103/PhysRevB.81.212501
DO - 10.1103/PhysRevB.81.212501
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AN - SCOPUS:77955864810
SN - 1098-0121
VL - 81
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 21
M1 - 212501
ER -