Weak ferromagnetism in diamagnetically-doped Bi1 - xAxFeO3 (A = Ca, Sr, Pb, Ba) multiferroics

V. A. Khomchenko; D. A. Kiselev; E. K. Selezneva; J. M. Vieira; A. M.L. Lopes; Y. G. Pogorelov; J. P. Araujo; A. L. Kholkin

doi:10.1016/j.matlet.2007.10.044

Weak ferromagnetism in diamagnetically-doped Bi_{1 - x}A_xFeO₃ (A = Ca, Sr, Pb, Ba) multiferroics

V. A. Khomchenko^*
, D. A. Kiselev
, E. K. Selezneva
, J. M. Vieira
, A. M.L. Lopes
, Y. G. Pogorelov
, J. P. Araujo
, A. L. Kholkin

^*Šī darba korespondējošais autors

University of Aveiro
University of Porto

Zinātniskās darbības rezultāts: Devums žurnālam › Zinātniskais raksts (žurnālā) › koleģiāli recenzēts

91 Atsauces (Scopus)

Kopsavilkums

Investigation of crystal structure, magnetic and local ferroelectric properties of the diamagnetically-doped Bi_{1 - x}A_xFeO₃ (A = Ca, Sr, Pb, Ba; x = 0.2, 0.3) ceramic samples has been carried out. It has been shown that the solid solutions have a rhombohedrally distorted perovskite structure described by the space group R3c. Piezoresponse force microscopy data have revealed the existence of the spontaneous ferroelectric polarization in the samples at room temperature. Magnetization measurements have shown that the magnetic state of these compounds is determined by the ionic radius of the substituting elements. A-site substitution with the biggest ionic radius ions has been found to suppress the spiral spin structure of BiFeO₃ and to result in the appearance of weak ferromagnetism. The magnetic properties have been discussed in terms of doping- induced changes in the magnetic anisotropy.

Oriģinālvaloda	Angļu
Lapas (no-līdz)	1927-1929
Lapu skaits	3
Žurnāls	Materials Letters
Sējums	62
Izdevuma numurs	12-13
DOIs	https://doi.org/10.1016/j.matlet.2007.10.044
Publikācijas statuss	Publicēts - 30 apr. 2008
Ārēji publicēts	Jā

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title = "Weak ferromagnetism in diamagnetically-doped Bi1 - xAxFeO3 (A = Ca, Sr, Pb, Ba) multiferroics",

abstract = "Investigation of crystal structure, magnetic and local ferroelectric properties of the diamagnetically-doped Bi1 - xAxFeO3 (A = Ca, Sr, Pb, Ba; x = 0.2, 0.3) ceramic samples has been carried out. It has been shown that the solid solutions have a rhombohedrally distorted perovskite structure described by the space group R3c. Piezoresponse force microscopy data have revealed the existence of the spontaneous ferroelectric polarization in the samples at room temperature. Magnetization measurements have shown that the magnetic state of these compounds is determined by the ionic radius of the substituting elements. A-site substitution with the biggest ionic radius ions has been found to suppress the spiral spin structure of BiFeO3 and to result in the appearance of weak ferromagnetism. The magnetic properties have been discussed in terms of doping- induced changes in the magnetic anisotropy.",

keywords = "Ferroelectrics, Magnetic materials, Multiferroics, Piezoresponse force microscopy",

author = "Khomchenko, \{V. A.\} and Kiselev, \{D. A.\} and Selezneva, \{E. K.\} and Vieira, \{J. M.\} and Lopes, \{A. M.L.\} and Pogorelov, \{Y. G.\} and Araujo, \{J. P.\} and Kholkin, \{A. L.\}",

year = "2008",

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TY - JOUR

T1 - Weak ferromagnetism in diamagnetically-doped Bi1 - xAxFeO3 (A = Ca, Sr, Pb, Ba) multiferroics

AU - Khomchenko, V. A.

AU - Kiselev, D. A.

AU - Selezneva, E. K.

AU - Vieira, J. M.

AU - Lopes, A. M.L.

AU - Pogorelov, Y. G.

AU - Araujo, J. P.

AU - Kholkin, A. L.

PY - 2008/4/30

Y1 - 2008/4/30

N2 - Investigation of crystal structure, magnetic and local ferroelectric properties of the diamagnetically-doped Bi1 - xAxFeO3 (A = Ca, Sr, Pb, Ba; x = 0.2, 0.3) ceramic samples has been carried out. It has been shown that the solid solutions have a rhombohedrally distorted perovskite structure described by the space group R3c. Piezoresponse force microscopy data have revealed the existence of the spontaneous ferroelectric polarization in the samples at room temperature. Magnetization measurements have shown that the magnetic state of these compounds is determined by the ionic radius of the substituting elements. A-site substitution with the biggest ionic radius ions has been found to suppress the spiral spin structure of BiFeO3 and to result in the appearance of weak ferromagnetism. The magnetic properties have been discussed in terms of doping- induced changes in the magnetic anisotropy.

AB - Investigation of crystal structure, magnetic and local ferroelectric properties of the diamagnetically-doped Bi1 - xAxFeO3 (A = Ca, Sr, Pb, Ba; x = 0.2, 0.3) ceramic samples has been carried out. It has been shown that the solid solutions have a rhombohedrally distorted perovskite structure described by the space group R3c. Piezoresponse force microscopy data have revealed the existence of the spontaneous ferroelectric polarization in the samples at room temperature. Magnetization measurements have shown that the magnetic state of these compounds is determined by the ionic radius of the substituting elements. A-site substitution with the biggest ionic radius ions has been found to suppress the spiral spin structure of BiFeO3 and to result in the appearance of weak ferromagnetism. The magnetic properties have been discussed in terms of doping- induced changes in the magnetic anisotropy.

KW - Ferroelectrics

KW - Magnetic materials

KW - Multiferroics

KW - Piezoresponse force microscopy

UR - https://www.scopus.com/pages/publications/39049099377

U2 - 10.1016/j.matlet.2007.10.044

DO - 10.1016/j.matlet.2007.10.044

M3 - Article

AN - SCOPUS:39049099377

SN - 0167-577X

VL - 62

SP - 1927

EP - 1929

JO - Materials Letters

JF - Materials Letters

IS - 12-13

ER -