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.

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...

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.%.

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.

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 …

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.

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.

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 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 =...

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 ...