https://doi.org/10.1140/epjp/s13360-022-02837-x
Regular Article
C-type and Γ2 antiferromagnetic orders in the complex magnetic ordering of Yb0.6Sr0.4MnO3
1
Petersburg Nuclear Physics Institute, 188300, Gatchina, Leningrad District, Russia
2
Department of Reactor Physics, NRC, Egyptian Atomic Energy Authority, Cairo, Egypt
3
Physics Department, Faculty of Science, Sohag University, Sohag, Egypt
4
Technology Group, Max Planck Institute of Solid State, Stuttgart, Germany
5
Department of Physics, Colleague of Science, Najran University, 1988, Najran, Saudi Arabia
6
Physics Department, Faculty of Science, Cairo University, Giza, Egypt
Received:
15
January
2022
Accepted:
16
May
2022
Published online:
4
June
2022
The complex crystal and magnetic structure of strontium-doped ytterbium manganites using high-resolution neutron diffraction at low temperature starting from 2.6 K has been studied. Yb0.6Sr0.4MnO3 was crystallized with the mixed phases of crystal structure: orthorhombic with Pbnm space group enclosing Jahn–Teller Mn3+ ions, and hexagonal crystal system of P63cm space group describing JT ions free phase over the whole temperature range. From the refinement of the neutron diffraction patterns, a distinguished difference in the behaviors of the two phases was observed with a variation in temperature where opposite lattice—temperature-dependent behavior was found. The magnetic ordering in hexagonal symmetry was frustrated and was having a canted spin of Mn magnetic moments in the plane of the Г2-type symmetry. Mn ions were arranged together in the well-separated triangular layers parallel to (ab) plane as a result of the antiferromagnetic exchange interaction between the spins of atoms in the most nearest neighbors, which make the Mn spin subsystem of low-dimensional and frustrated at TN≈150 K. The other phase of the orthorhombic crystal system showed the C-type antiferromagnetic at TN≈70 K. The contribution of Yb atom in the magnetic ordering down to T = 2.6 K has not been registered. The magnetization–temperature dependence of Yb0.6Sr0.4MnO3 at different applied magnetic field was calculated using Monte Carlo simulation based on Ising model. Theoretically calculated model and experimental data were in good agreement. The complex magnetic ordering of the Yb0.6Sr0.4MnO3 for the mixed crystal structure was well described by Ising model.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022
