Study of structure and magnetic properties of the perovskite Tb0.5Sr0.5CoO3

• Published in: Journal of alloys and compounds Vol. 390; no. 1-2; pp. 26 - 30
• Main Authors: SRIKIRAN, J. S, YUSUF, S. M
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier 22.03.2005
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Magnetic properties and materials; Physics; Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.); Studies of specific magnetic materials; Powder neutron diffraction; Powders; Space groups; Magnetization; Ground states; Neutron diffraction; Magnetic ordering; Bond angle; Ferromagnetic materials; Perovskites; Ionic radius; 75.50. -y; 75.30. -m Perovskite; Size effect; Paramagnetic materials; Magnetic structure; Transport processes; DC Magnetization; Magnetic properties
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2004.08.030

The perovskite compound Tb0.5Sr0.5CoO3 has been prepared and studied for the first time. We report here the structural and magnetic properties of the compound using the DC magnetization and powder neutron diffraction techniques. The compound is found to be orthorhombic with Pbnm space group. The magnetic ground state of the system is ferromagnetic with Tc = 120 K. The ordered magnetic moment is founc to be 1.57 (4) 1mB/Co ion at 12 K along the crystallographic b-axis. The observed effective paramagnetic moment mueff = 2.54 muB/f.u. The role of ionic size effect on the magnetic and transport properties of the compound through the variation of Co-O-Co bond angles is highlighted