Material Reveals Unexpected, Intriguing Behavior | Science Blog:
"In the “before” case, the x-rays scattered about in many different directions, indicating that the PNR fields were oriented in many different ways. After applying the external field, the researchers expected a significant change in the x-ray patterns, showing that the PNR fields — somewhat like magnetic metal filings in a magnetic field — had neatly aligned with it. But the patterns changed in a different way than predicted. They indicated, instead, that the PNR fields preferred to line up perpendicular to the external field, even as the surrounding atomic lattice lined up along it."
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