
Crystal Growth and Basic Transport and Magnetic Properties of MnBi
2019年11月16日 · Our detailed, PXRD Reitveld analysis showed that the resultant crystal is dominated mainly by MnBi 2 Te 4 and minor phases of Bi 2 Te 3 and MnTe. The transport measurements showed a step like behavior at around 150 K followed by cusp like structure in resistivity at around 25 K (T P) due reported anti-ferromagnetic ordering of Mn.
FIG. 3. XRD patterns of MnBi bulk magnet parallel (//) and...
The magnetic alignment of bulk MnBi magnets was characterized by XRD patterns. Figure 3 shows the XRD patterns taken on the surface parallel and perpendicular to the magnetic alignment...
MnBi-Based Bulk Magnets: Preparation and Magnetic Performance
2022年1月12日 · The high-performance starting MnBi powder has an XRD pattern with all peaks belonging to the MnBi LTP, where the strongest peaks of Bi (Bi(012) at 2θ = 27.16°) and of Mn (Mn(411) at 2θ = 43.02°) are absent. In the error of the XRD method, the MnBi LTP content of the starting powder is about 98 wt.%.
Ferromagnetic-antiferromagnetic coexisting ground state and
2022年12月10日 · Atomic-resolution electron energy loss spectroscopy (EELS) mapping as well as single-crystal X-ray diffraction (SC-XRD) reveal the ubiquitous Mn-Bi site mixing in the crystals.
Preparation and magnetic properties of MnBi alloy and MnBi …
2020年12月31日 · The crystal structure of MnBi alloy and MnBi/Fe bulk magnets were examined by X-ray diffraction (XRD) using a Rigaku SmartLab-9 instrument with Cu K α radiation at 45 kV and 200 mA. The hysteresis loops of the ingots and powders were obtained using magnetic property measurement system (MPMS) by a Quantum Design …
and Fig. 4 show the XRD patterns of the MnBi alloy
The XRD patterns indicated that the LTP MnBi appeared to be the major phase and the Bi and Mn phases were the minor phases after the heat treatment.
Microstructure, improved magnetic properties, and recoil loops ...
2019年9月1日 · MnBi is a potential candidate for permanent magnets that can be used in high-temperature applications due to the large magnetocrystalline anisotropy and unique positive temperature coefficient of coercivity. In this work, MnBi magnets with a high content of low temperature phase (LTP) were prepared by arc melting followed by heat treatment.
Tunable 3D/2D magnetism in the (MnBi - Nature
2020年8月3日 · Here we report on a large family of intrinsic magnetic TIs in the homologous series of the van der Waals compounds (MnBi 2 Te 4) (Bi 2 Te 3) m with m = 0, ⋯, 6. Magnetic, electronic and,...
The XRD patterns of the starting MnBi powder and the prepared …
The high-performance starting MnBi powder has an XRD pattern with all peaks belonging to the MnBi LTP, where the strongest peaks of Bi (Bi(012) at 2θ = 27.16°) and of Mn (Mn(411) at 2θ =...
The Synthesis of MnBi - Springer
2022年2月19日 · The XRD pattern of the ground MnBi 2 Te 4 powders in Fig. 2b is consistent with the calculated XRD pattern of MnBi 2 Te 4, which crystallizes into a rhombohedral lattice with an R͞3m space group and lattice constants a = 4.35 Å and c = 40.89 Å. The rocking curve measurement is an important tool for investigating the crystalline perfection of ...