Anantharaman, M R; Myung, Gwan Hahm; Xaiobo, Zhan; Kumarasiri, A; Tyagi, A K; Mandal, B P; Narayanan, T N; Lawes, G; Ajayan, P M(American Chemical Society, April 30, 2012)
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Abstract:
The development of methods to economically
synthesize single wire structured multiferroic systems with
room temperature spin−charge coupling is expected to be
important for building next-generation multifunctional devices
with ultralow power consumption. We demonstrate the
fabrication of a single nanowire multiferroic system, a new
geometry, exhibiting room temperature magnetodielectric
coupling. A coaxial nanotube/nanowire heterostructure of
barium titanate (BaTiO3, BTO) and cobalt (Co) has been
synthesized using a template-assisted method. Room temperature
ferromagnetism and ferroelectricity were exhibited by this coaxial system, indicating the coexistence of more than one
ferroic interaction in this composite system