تقرير
Imaging the magnetic states in an actinide ferromagnet UMn$_2$Ge$_2$
العنوان: | Imaging the magnetic states in an actinide ferromagnet UMn$_2$Ge$_2$ |
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المؤلفون: | Tan, Xinzhou, Berg, Morgann, Kim, Jeehoon, Baumbach, Ryan E., Bauer, Eric D., Thompson, Joe D., Ronning, Filip, de Lozanne, Alex |
المصدر: | Phys. Rev. Materials 2, 074402 (2018) |
سنة النشر: | 2017 |
المجموعة: | Condensed Matter |
مصطلحات موضوعية: | Condensed Matter - Materials Science |
الوصف: | We present studies of the magnetic domain structure of UMn$_2$Ge$_2$ single crystals using a home-built low temperature magnetic force microscope. The material has two distinct magnetic ordering temperatures, originating from the Mn and U moments. At room temperature, where the Mn moments dominate, there are flower-like domain patterns similar to those observed in uniaxial ferromagnets. After exposing the sample to a one-tesla magnetic field near 40 K, the evolution of the magnetic domains are imaged through zero-field warming up to 200 K. Near the ordering temperature of the uranium moments a clear change in the domain wall motion is observed. The domain size analysis of the flower-like pattern reveals that the domain structure is consistent with a model of branching domains. |
نوع الوثيقة: | Working Paper |
DOI: | 10.1103/PhysRevMaterials.2.074402 |
URL الوصول: | http://arxiv.org/abs/1709.05007 |
رقم الأكسشن: | edsarx.1709.05007 |
قاعدة البيانات: | arXiv |
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