Evidence of the Griffiths phase in multiferroic BiMnO3 and BiFe0.5Mn0.5O3 films

VG Prokhorov; GG Kaminsky; JM Kim; YJ Yoo; YP Lee; VL Svetchnikov; GG Levchenko; YM Nikolaenko

doi:10.1063/1.4709440

Evidence of the Griffiths phase in multiferroic BiMnO3 and BiFe0.5Mn0.5O3 films

VG Prokhorov, GG Kaminsky, JM Kim, YJ Yoo, YP Lee, VL Svetchnikov, GG Levchenko, YM Nikolaenko

Research output: Contribution to journal › Article › Scientific › peer-review

11 Citations (Scopus)

Abstract

Microstructure and magnetic properties of BiMnO3 and BiFe0.5Mn0.5O3 films, prepared by rf magnetron sputtering on LaAlO3 (001) single-crystalline substrate, are investigated. The selected-area electron diffraction analysis allows us to identify the crystal structure of the BiMnO3 film as orthorhombic, while the BiFe0.5Mn0.5O3 film has a hexagonal lattice symmetry. High-resolution electron microscopy study reveals the presence of strip-domain phase with a periodic spacing of about 3c in both films. Magnetic measurements show that in addition to the basic paramagnetic phase the films exhibit Griffiths phase behavior in a wide temperature range. We argue that the observed weak ferromagnetism is due to the strip-domain layered inclusions, rather than intrinsic physical origin of the films.

Original language	English
Pages (from-to)	413-418
Number of pages	6
Journal	Low Temperature Physics
Volume	38
Issue number	5
DOIs	https://doi.org/10.1063/1.4709440
Publication status	Published - 2012

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title = "Evidence of the Griffiths phase in multiferroic BiMnO3 and BiFe0.5Mn0.5O3 films",

abstract = "Microstructure and magnetic properties of BiMnO3 and BiFe0.5Mn0.5O3 films, prepared by rf magnetron sputtering on LaAlO3 (001) single-crystalline substrate, are investigated. The selected-area electron diffraction analysis allows us to identify the crystal structure of the BiMnO3 film as orthorhombic, while the BiFe0.5Mn0.5O3 film has a hexagonal lattice symmetry. High-resolution electron microscopy study reveals the presence of strip-domain phase with a periodic spacing of about 3c in both films. Magnetic measurements show that in addition to the basic paramagnetic phase the films exhibit Griffiths phase behavior in a wide temperature range. We argue that the observed weak ferromagnetism is due to the strip-domain layered inclusions, rather than intrinsic physical origin of the films.",

author = "VG Prokhorov and GG Kaminsky and JM Kim and YJ Yoo and YP Lee and VL Svetchnikov and GG Levchenko and YM Nikolaenko",

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T1 - Evidence of the Griffiths phase in multiferroic BiMnO3 and BiFe0.5Mn0.5O3 films

AU - Prokhorov, VG

AU - Kaminsky, GG

AU - Kim, JM

AU - Yoo, YJ

AU - Lee, YP

AU - Svetchnikov, VL

AU - Levchenko, GG

AU - Nikolaenko, YM

PY - 2012

Y1 - 2012

N2 - Microstructure and magnetic properties of BiMnO3 and BiFe0.5Mn0.5O3 films, prepared by rf magnetron sputtering on LaAlO3 (001) single-crystalline substrate, are investigated. The selected-area electron diffraction analysis allows us to identify the crystal structure of the BiMnO3 film as orthorhombic, while the BiFe0.5Mn0.5O3 film has a hexagonal lattice symmetry. High-resolution electron microscopy study reveals the presence of strip-domain phase with a periodic spacing of about 3c in both films. Magnetic measurements show that in addition to the basic paramagnetic phase the films exhibit Griffiths phase behavior in a wide temperature range. We argue that the observed weak ferromagnetism is due to the strip-domain layered inclusions, rather than intrinsic physical origin of the films.

AB - Microstructure and magnetic properties of BiMnO3 and BiFe0.5Mn0.5O3 films, prepared by rf magnetron sputtering on LaAlO3 (001) single-crystalline substrate, are investigated. The selected-area electron diffraction analysis allows us to identify the crystal structure of the BiMnO3 film as orthorhombic, while the BiFe0.5Mn0.5O3 film has a hexagonal lattice symmetry. High-resolution electron microscopy study reveals the presence of strip-domain phase with a periodic spacing of about 3c in both films. Magnetic measurements show that in addition to the basic paramagnetic phase the films exhibit Griffiths phase behavior in a wide temperature range. We argue that the observed weak ferromagnetism is due to the strip-domain layered inclusions, rather than intrinsic physical origin of the films.

U2 - 10.1063/1.4709440

DO - 10.1063/1.4709440

M3 - Article

SN - 1063-777X

VL - 38

SP - 413

EP - 418

JO - Low Temperature Physics

JF - Low Temperature Physics

IS - 5

ER -

Evidence of the Griffiths phase in multiferroic BiMnO3 and BiFe0.5Mn0.5O3 films

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