Dresden 2017 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 68: Poster 5

MA 68.8: Poster

Freitag, 24. März 2017, 09:30–13:00, P2-OG4

Domain engineering in the 4f uniaxial ferromagnet CeRu₂Ga₂B — •Dirk Wulferding^1,2, Hoon Kim^1,3, Ilkyu Yang^1,3, Oscar Ayala-Valenzuela¹, Roman Movshovich⁴, Ryan Baumbach⁵, Eric Bauer⁴, Joe Thompson⁴, Leonardo Civale⁴, and Jeehoon Kim^1,3 — ¹CALDES, Institute for Basic Science, Pohang, Korea — ²IPKM und LENA, TU-BS, Braunschweig, Germany — ³Dept. of Phys., POSTECH, Korea — ⁴MPA-CMMS, Los Alamos Natl. Lab., Los Alamos, USA — ⁵NHML, Florida State Univ., Tallahassee, USA

The interplay of spin and electronic degrees of freedom in strongly correlated electron systems is a fruitful route towards many exotic and unexpected phenomena. In particular, rich magnetic phase diagrams can be found in systems with additional magnetic anisotropies. While the bulk magnetic properties are often well explored, the evolution of the microscopic magnetic domain structure within the phase diagram remains elusive. Using low temperature magnetic force microscopy with vector magnet capabilities [1], we explore the evolution and manipulation of magnetic domains in the centrosymmetric ferromagnet CeRu₂Ga₂B [2]. This compound exhibits transitions among dendritic, stripe, and bubble domain phases. We highlight the domain evolution with a vector magnetic field in this Ising-like spin system and demonstrate the manipulation of individual bubble domains through the magnetic tip of our scanning probe microscope.

[1] Yang, et al., Rev. Sci. Instrum. 87, 023704 (2016). [2] Baumbach, et al., J. Phys.: Condens. Matter 24, 185702 (2012).