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Temperature-induced phase transition from cycloidal to collinear antiferromagnetism in multiferroic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Bi</mml:mi><mml:mrow><mml:mn>0.9</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mi>Sm</mml:mi><mml:mrow><mml:mn>0.1</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mi>FeO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> driven by <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>f</mml:mi><…
In multiferroic ${\mathrm{BiFeO}}_{3}$ a cycloidal antiferromagnetic structure is coupled to a large electric polarization at room temperature, giving rise to magnetoelectric functionality that may be exploited in novel multiferroic-based devices. In this paper, we demonstrate that substituting samarium for 10% of the bismuth ions increases the periodicity of the room-temperature …