Next Article in Journal
Liquefied Wood as Inexpensive Precursor-Feedstock for Bio-Mediated Incorporation of (R)-3-Hydroxyvalerate into Polyhydroxyalkanoates
Next Article in Special Issue
Single-Crystal Y2O3 Epitaxially on GaAs(001) and (111) Using Atomic Layer Deposition
Previous Article in Journal
Feasibility Studies of Palm Oil Mill Waste Aggregates for the Construction Industry
Previous Article in Special Issue
Plasma Enhanced Complete Oxidation of Ultrathin Epitaxial Praseodymia Films on Si(111)
Open AccessArticle

Engineered Heusler Ferrimagnets with a Large Perpendicular Magnetic Anisotropy

1
WPI-Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
2
Department of Applied Physics, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Jan Ingo Flege
Materials 2015, 8(9), 6531-6542; https://doi.org/10.3390/ma8095320
Received: 6 August 2015 / Revised: 4 September 2015 / Accepted: 15 September 2015 / Published: 22 September 2015
(This article belongs to the Special Issue Epitaxial Materials 2015)
Synthetic perpendicular magnetic anisotropy (PMA) ferrimagnets consisting of 30-nm-thick D022-MnGa and Co2MnSi (CMS) cubic Heusler alloys with different thicknesses of 1, 3, 5, 10 and 20 nm, buffered and capped with a Cr film, are successfully grown epitaxially on MgO substrate. Two series samples with and without post annealing at 400 °C are fabricated. The (002) peak of the cubic L21 structure of CMS films on the MnGa layer is observed, even for the 3-nm-thick CMS film for both un-annealed and annealed samples. The smaller remnant magnetization and larger switching field values of CMS (1–20 nm)/MnGa (30 nm) bilayers compared with 30-nm-thick MnGa indicates antiferromagnetic (AFM) interfacial exchange coupling (Jex) between MnGa and CMS films for both un-annealed and annealed samples. The critical thickness of the CMS film for observing PMA with AFM coupling in the CMS/MnGa bilayer is less than 10 nm, which is relatively large compared to previous studies. View Full-Text
Keywords: epitaxial film; MnGa; Co2MnSi cubic Heusler alloy; synthetic PMA ferrimagnets epitaxial film; MnGa; Co2MnSi cubic Heusler alloy; synthetic PMA ferrimagnets
Show Figures

Figure 1

MDPI and ACS Style

Ranjbar, R.; Suzuki, K.; Sugihara, A.; Miyazaki, T.; Ando, Y.; Mizukami, S. Engineered Heusler Ferrimagnets with a Large Perpendicular Magnetic Anisotropy. Materials 2015, 8, 6531-6542.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Back to TopTop