Magnetic phases in Pr0.5Sr0.5Mn1 − x Co x O3 (x ≤ 0.5) solid solutions
| Autor: | A. N. Chobot, E. A. Efimova, I. O. Troyanchuk, N. V. Tereshko, O. S. Mantytskaya |
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| Rok vydání: | 2011 |
| Předmět: |
Curie–Weiss law
Materials science Condensed matter physics Analytical chemistry chemistry.chemical_element Condensed Matter Physics Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Paramagnetism Magnetization chemistry Ferromagnetism Phase (matter) Antiferromagnetism Curie temperature Condensed Matter::Strongly Correlated Electrons Cobalt |
| Zdroj: | Physics of the Solid State. 53:1340-1347 |
| ISSN: | 1090-6460 1063-7834 |
| DOI: | 10.1134/s1063783411070298 |
| Popis: | The magnetic and magnetotransport properties of Pr0.5Sr0.5Mn1 − x Co x O3 (x ≤ 0.5) solid solutions have been investigated using neutron diffraction methods. The magnetization and electrical conductivity have been measured in magnetic fields up to 140 kOe. It has been established that, during cooling in the temperature range from 160 to 110 K, the compounds of compositions with a cobalt content x ≤ 0.07 undergo a structural phase transition from the high-temperature ferromagnetic phase to the antiferromagnetic phase. A further substitution of cobalt for manganese leads to a stabilization of the inhomogeneous dielectric ferromagnetic state, whereas a state of the cluster spin-glass type has been revealed in compositions with x = 0.15 and 0.20. At x ≥ 0.25, a new magnetic phase with a Curie temperature up to 210 K is formed as a result of the magnetic interaction between manganese and cobalt ions. A magnetic phase diagram of the system under investigation has been constructed. |
| Databáze: | OpenAIRE |
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