Antiphase boundaries in bulk Ni-Mn-Ga Heusler alloy observed by magnetic force microscopy

0496313 - FZÚ 2019 RIV US eng J - Článek v odborném periodiku
Straka, Ladislav - Fekete, Ladislav - Heczko, Oleg
Antiphase boundaries in bulk Ni-Mn-Ga Heusler alloy observed by magnetic force microscopy.
Applied Physics Letters. Roč. 113, č. 17 (2018), s. 1-5, č. článku 172901. ISSN 0003-6951. E-ISSN 1077-3118
Grant CEP: GA ČR GA17-00062S; GA MŠMT(CZ) LO1409; GA MŠMT(CZ) LM2015088
GRANT EU: European Commission(XE) 701867 - FUNMAH
Institucionální podpora: RVO:68378271
Klíčová slova: antiphase * electron holography * boundaries * magnetic force microscopy
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.521, rok: 2018

The antiphase boundaries (APBs) in Ni-Mn-Ga Heusler alloys with L21 ordering have been so far possible to observe only in the foils using electron holography. Here, we present the possibility to observe the APBs in bulk materials by conventional magnetic force microscopy using particularly oriented and magnetized single crystal samples in the martensite state. The bipolar APB contrast occurs where in-plane magnetization is oriented perpendicularly to APBs. This is in agreement with a qualitative model of an APB as a planar non-magnetic layer in the ferromagnetic matrix.
Trvalý link: http://hdl.handle.net/11104/0289806