CARNEIRO, A.S.JARDIM, R.F.FONSECA, F.C.2014-07-152014-07-302014-07-152014-07-302006CARNEIRO, A.S.; JARDIM, R.F.; FONSECA, F.C. Current localization and joule self-heating effects in Cr-doped Ndsub(0.5)Casub(0.5)MnOsub(3) manganites. <b>Physical Review, B</b>, v. 73, p. p. 012410-1 - 012410-4, 2006. DOI: <a href="https://dx.doi.org/10.1103/PhysRevB.73.012410">10.1103/PhysRevB.73.012410</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/5361.1098-0121http://repositorio.ipen.br/handle/123456789/5361The effects of dc excitation current on the current-voltage curves of polycrystalline samples of Nd0.5Ca0.5Mn0.96Cr0.04O3 were investigated. The experimental results show that an abrupt jump of the voltage is concomitant with a huge increase in the temperature of the sample. A simple model and estimates for Joule self-heating effects support the experimental data. Moreover, the data strongly suggest that both the current localization in the metallic paths and local Joule self-heating effects are essential ingredients to understand the current-induced phase transition in phase-separated manganites.p. 012410-1 - 012410-4openAccesspolycrystalssample preparationcurrentselectric potentialjoule heatingmanganatesArtigo de periódico7310.1103/PhysRevB.73.012410https://orcid.org/0000-0003-0708-2021