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In: Corona, Neutrons

Since some weeks now, many colleagues have come back to the lab, others continue to work from home. These different working environments will continue to accompany us in the coming weeks. This week, Sophie Spangenberger met (online) with Michael Tovar from the X-ray lab at HZB in Wannsee. You are responsible for the X-ray laboratory in Wannsee. How did you handle the lockdown? Our lab operations are geared to the experiment and, of course, only work when we are there. The instruments run in 365-7-24 mode and may only go into standby mode once before Christmas. With the corona lockdown, we had to close theRead More →

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In: Neutrons

An international team has examined pristine and slightly doped bismuth ferrite using experimental data obtained at HZB. The research shows the sequence of serial and trigger-type phase transitions, the temperature-dependent behavior of the order parameters, and the corresponding susceptibilities to external stimuli.  The material: Multiferroics are materials that exhibit multiple types of ferroic ordering, such as ferromagnetism and ferroelectricity, simultaneously. BiFeO3 (BFO) is the one of the rare multiferroics with a strong ferroelectric polarization, antiferromagnetism at room temperature as well as conduction and magnetotransport at domain walls. This makes it a candidate for a range of applications. The question: What are the underlying physical mechanismsRead More →