Room temperature ferromagnetism in Co-doped la0.5Sr 0.5TiO3-δ nanoparticles

Kwanruthai Wongsaprom, Ekaphan Swatsitang, Santi Maensiri, Somkait Srijaranai, Supapan Seraphin

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27 Scopus citations


The authors report room temperature ferromagnetism in La 0.5Sr0.5Ti0.985Coc.015O 3-δ nanoparticles with particle sizes of ∼12-14nm. Nanoparticles of undoped and Co-doped samples were synthesized by a polymerized complex method and were characterized using x-ray diffraction and transmission electron microscopy. The magnetic properties of the nanoparticles were determined using vibrating sample magnetometry. The undoped samples exhibit a diamagnetic behavior, whereas all the Co-doped samples are ferromagnetic having the specific magnetizations of ∼0.011-0.038 emu/g at 10 kOe. The finding of room temperature ferromagnetism in the Co-doped samples would allow an enhanced flexibility for applications.

Original languageEnglish (US)
Article number162506
JournalApplied Physics Letters
Issue number16
StatePublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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