Artículos de revistas
Evidence of new magnetic ordering at high temperatures in Pb-based multiferroics perovskites
Registro en:
Physica Status Solidi A-applications And Materials Science. Wiley-v C H Verlag Gmbh, v. 210, n. 9, n. 1856, n. 1860, 2013.
1862-6300
1862-6319
WOS:000327864700026
10.1002/pssa.201329011
Autor
Fraygola, B
Nascimento, WJ
Coelho, AA
Garcia, D
Eiras, JA
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Presented here are the results of magnetic data that reveal that both Pb-based perovskites samples, Pb(Fe1/2Nb1/2)O-3 (lead iron niobate - PFN) and Pb(Fe2/3W1/3)O-3 (lead iron tungstate - PFW), exhibit a change in magnetic ordering from paramagnetic (PM) to weak ferromagnetic state at high temperature: a weak ferromagnetic order occurs in the samples around 530K. The experimental results suggest a possible involvement of the Pb ions into the superexchange of antiferromagnetic (AFM) phase. 210 9 1856 1860 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) FAPESP [Proc. 2008/04025-0, 2010/11187-6]