caa a22 4500 605545405 CHVBK 20210128100935.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s00723-015-0647-6 doi (NATIONALLICENCE)springer-10.1007/s00723-015-0647-6 Effect of Size Reduction on Magnetic Ordering in Sm1− x Ca x MnO3 ( x =0.35, 0.65 and 0.92) Manganites: Magnetic and EMR Studies [Elektronische Daten] [Lora Goveas, K. Bhagyashree, K. Anuradha, S. Bhat] We have employed the highly sensitive electron magnetic resonance technique complimented by magnetization measurements to study the impact of size reduction on the magnetic ordering in nanosized Sm1−x Ca x MnO3 (x=0.35, 0.65 and 0.92). In the bulk form, x=0.35 sample shows a charge ordering transition at 235K followed by a mixed magnetic phase, the sample with x=0.65 exhibits charge order below 275K and shows an antiferromagnetic insulator phase below 135K while that with x=0.92 has a ferromagnetic-cluster glass ground state. Thus, a comparative study of magnetic ground states of bulk and nanoparticles (diameter ~25nm) enables us to investigate size-induced effects on different types of magnetic ordering. It is seen that in the bulk samples the temperature dependences of the EPR parameters are quite different from each other. This difference diminishes for the nanosamples where all the three samples show qualitatively similar behavior. The magnetization measurements corroborate this conclusion. Springer-Verlag Wien, 2015 Goveas Lora Department of Physics, Dr. Ambedkar Institute of Technology, 560056, Bangalore, India aut Bhagyashree K. Department of Physics, Indian Institute of Science, 560012, Bangalore, India aut Anuradha K. Department of Physics, Dr. Ambedkar Institute of Technology, 560056, Bangalore, India aut Bhat S. Department of Physics, Indian Institute of Science, 560012, Bangalore, India aut Applied Magnetic Resonance Springer Vienna 46/9(2015-09-01), 967-976 0937-9347 46:9<967 2015 46 723 https://doi.org/10.1007/s00723-015-0647-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00723-015-0647-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Goveas Lora Department of Physics, Dr. Ambedkar Institute of Technology, 560056, Bangalore, India aut NATIONALLICENCE 700 1- Bhagyashree K. Department of Physics, Indian Institute of Science, 560012, Bangalore, India aut NATIONALLICENCE 700 1- Anuradha K. Department of Physics, Dr. Ambedkar Institute of Technology, 560056, Bangalore, India aut NATIONALLICENCE 700 1- Bhat S. Department of Physics, Indian Institute of Science, 560012, Bangalore, India aut NATIONALLICENCE 773 0- Applied Magnetic Resonance Springer Vienna 46/9(2015-09-01), 967-976 0937-9347 46:9<967 2015 46 723