INVESTIGADORES
LARRALDE Ana Laura
artículos
Título:
Novel incommensurate magnetic phase in the magnetoelectric Sr-doped cobaltate CaBaCo4O7
Autor/es:
J. LOHR; A. L. LARRALDE; J. CURIALE; R. SÁNCHEZ; J. CAMPO; G. CUELLO; D. SHEPTYAKOV; L. KELLER; M. KENZELMANN; G. AURELIO
Revista:
ACTA CRYSTALLOGRAPHICA A
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2021 vol. 77 p. 30 - 30
ISSN:
0108-7673
Resumen:
The magnetetoelectric CaBaCo4O7 compound offers an interesting scenario to study frustrated magnetic configurations. The Co2+ and Co3+ ions in tetrahedral oxygen coordination form a three-dimensional framework of interconnected triangular and kagome layered arrangements [1]. The compound becomes ferrimagnetic below 60 K, and displays a strong increase of electric polarization of 17 000 μC/cm2, driven by exchange-striction. In this work, we present our results on the thermal evolution of magnetic and crystallographic properties of powder samples of Ca1-xSrxBaCo4O7 (x = 0, 0.02, 0.05, 0.07) to study the effect of substitution at the Ca site. We will show that low doping levels (
