Temperature-Driven Transformation of the Crystal and Magnetic Structures of BiFe<sub>0.7</sub>Mn<sub>0.3</sub>O<sub>3</sub> Ceramics
Dmitry V. Karpinsky,
Maxim V. Silibin,
Siarhei I. Latushka,
Dmitry V. Zhaludkevich,
Vadim V. Sikolenko,
Roman Svetogorov,
M. I. Sayyed,
Nouf Almousa,
Alex Trukhanov,
Sergei Trukhanov,
Alexei А. Belik
Affiliations
Dmitry V. Karpinsky
Scientific-Practical Materials Research Centre of NAS of Belarus, 220072 Minsk, Belarus
Maxim V. Silibin
Institute for Advanced Materials and Technologies, National Research University of Electronic Technology “MIET”, 124498 Zelenograd, Moscow, Russia
Siarhei I. Latushka
Scientific-Practical Materials Research Centre of NAS of Belarus, 220072 Minsk, Belarus
Dmitry V. Zhaludkevich
Scientific-Practical Materials Research Centre of NAS of Belarus, 220072 Minsk, Belarus
Vadim V. Sikolenko
Institute for Advanced Materials and Technologies, National Research University of Electronic Technology “MIET”, 124498 Zelenograd, Moscow, Russia
Roman Svetogorov
NRC “Kurchatov Institute”, Acad. Kurchatov Sq. 1, 123182 Moscow, Russia
M. I. Sayyed
Department of Physics, Faculty of Science, Isra University, Amman 1162, Jordan
Nouf Almousa
Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
Alex Trukhanov
Scientific-Practical Materials Research Centre of NAS of Belarus, 220072 Minsk, Belarus
Sergei Trukhanov
Scientific-Practical Materials Research Centre of NAS of Belarus, 220072 Minsk, Belarus
Alexei А. Belik
International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba 305-0044, Ibaraki, Japan
The compound BiFe0.7Mn0.3O3 consisting at room temperature of coexistent anti-polar orthorhombic and polar rhombohedral phases has a metastable structural state, which has been studied by laboratory X-ray, synchrotron and neutron diffraction, magnetometry, differential thermal analysis, and differential scanning calorimetry. Thermal annealing of the sample at temperatures above the temperature-driven phase transition into the single phase rhombohedral structure (~700 K) causes an increase of the volume fraction of the rhombohedral phase at room temperature from ~10% up to ~30%, which is accompanied by the modification of the magnetic state, leading to strengthening of a ferromagnetic component. A strong external magnetic field (~5 T) applied to the sample notably changes its magnetic properties, as well as provides a reinforcement of the ferromagnetic component, thus leading to an interaction between two magnetic subsystems formed by the antiferromagnetic matrix with non-collinear alignment of magnetic moments and the nanoscale ferromagnetic clusters coexisting within it. The modification of the structural state and magnetic properties of the compounds and a correlation between different structural and magnetic phases are discussed focusing on the effect of thermal annealing and the impact of an external magnetic field.
