caa a22 4500 445381469 CHVBK 20180317143018.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-1014-3 doi (NATIONALLICENCE)springer-10.1007/s10948-010-1014-3 Observation of Spin-Glass Behavior in La0.85Sr0.15CoO3 Single Crystals [Elektronische Daten] [Kaustuv Manna, D. Samal, Suja Elizabeth, H. Bhat, P. AnilKumar] The magnetic behavior of La0.85Sr0.15CoO3 single crystals and polycrystals has been subjected to a controversial debate for the last several years; while some groups show evidence for phase separation, others show spin-glass (SG) behavior. Here, we present a comprehensive investigation of the structural, ac susceptibility, and dc magnetization properties of La0.85Sr0.15CoO3 single crystals grown by float zone method. The structural analysis of XRD data by Rietveld refinement reveals the single crystallographic phase. The ac susceptibility results exhibit a frequency dependent peak shift (∼2K) and time-dependent memory effect below the freezing temperature. The characteristic time scale τ o calculated from this peak shift is found to be of ∼10−13 s which matches very well with typical values observed for a SG system. Further, the peak shift of the zero-field-cooling curves to lower temperature at higher dc fields is well described by the well-known de Almeida Thouless line, a characteristic of SG behavior. Thus, all our experimental findings confirm the existence of SG behavior in La0.85Sr0.15CoO3 single crystals. Springer Science+Business Media, LLC, 2010 Spin-glass nationallicence Single crystal nationallicence Float zone method nationallicence Magnetic oxide nationallicence Manna Kaustuv Department of Physics, Indian Institute of Science, C V Raman Avenue, 560012, Bangalore, India aut Samal D. Department of Physics, Indian Institute of Science, C V Raman Avenue, 560012, Bangalore, India aut Elizabeth Suja Department of Physics, Indian Institute of Science, C V Raman Avenue, 560012, Bangalore, India aut Bhat H. Department of Physics, Indian Institute of Science, C V Raman Avenue, 560012, Bangalore, India aut AnilKumar P. Department of Physics, Indian Institute of Science, C V Raman Avenue, 560012, Bangalore, India aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 833-837 1557-1939 24:1-2<833 2011 24 10948 https://doi.org/10.1007/s10948-010-1014-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-1014-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Manna Kaustuv Department of Physics, Indian Institute of Science, C V Raman Avenue, 560012, Bangalore, India aut NATIONALLICENCE 700 1- Samal D. Department of Physics, Indian Institute of Science, C V Raman Avenue, 560012, Bangalore, India aut NATIONALLICENCE 700 1- Elizabeth Suja Department of Physics, Indian Institute of Science, C V Raman Avenue, 560012, Bangalore, India aut NATIONALLICENCE 700 1- Bhat H. Department of Physics, Indian Institute of Science, C V Raman Avenue, 560012, Bangalore, India aut NATIONALLICENCE 700 1- AnilKumar P. Department of Physics, Indian Institute of Science, C V Raman Avenue, 560012, Bangalore, India aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 833-837 1557-1939 24:1-2<833 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer