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Magnetization distribution in the tetragonal phase of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>BaFe</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mtext>As</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>
We have determined the spatial distribution of the magnetization induced by a field of 9 T in the tetragonal phase of ${\text{BaFe}}_{2}{\text{As}}_{2}$ using polarized neutron diffraction. Magnetic structure factors derived from the polarization dependence of the intensities of Bragg reflections were used to make a maximum-entropy reconstruction of the distribution …