Heat capacity, magnetic and lattice dynamic properties of TbMn1-xFexO3

International Conference on Strongly Correlated Electron Systems 2014

Mihalik Jr., M.^1 ; Mihalik, M.^1 ; Fitta, M.^2 ; Vavra, M.^1,3 ; Zentková, M.^1 ; Vilarinho, R.^4 ; Mota, D.A.^4 ; Tavares, P.^4 ; Moreira, J. Agostinho^4 ; Almeida, A.^4

Institute of Experimental Physics, Slovak Academy of Sciences, Koice, Slovakia^1

Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland^2

P. J. Afárik University, Faculty of Science, Koice, Slovakia^3

IN-Institute of Nanoscience and Nanotechnology, Departamento de Física e Astronomia da Faculdade de Ciências, Universidade Do Porto, Porto, Portugal^4

关键词: Concentration ranges;    Effect of substitution;    Lattice distortions;    Magnetic ground state;    Magnetic transitions;    Magnetization measurements;    Octahedra tilting;    Theoretical study;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012119/pdf
DOI  :  10.1088/1742-6596/592/1/012119

来源: IOP

【 摘 要 】

The effect of substitution of Fe3+ions by Mn3+ions on crystal structure, lattice dynamic, heat capacity and magnetic properties in TbMn1-xFexO3ceramics has been studied. X-ray powder diffraction and Raman spectroscopy revealed that lattice distortion can be mainly attributed to Jahn-Teller distortion and tilting of octahedrons for samples with x 3and TbFeO3), which are associated with magnetic transitions, are smeared out by ion substitution. Magnetization measurements indicate that magnetic ordering persists in whole concentration range. The butterfly-type magnetic hysteresis loops suggest that the magnetic ground state of the whole system is complex and thence interesting for next experimental and theoretical studies.