Crystal structure, mechanical exfoliation and magnetism measurements of RETi3Bi4. (IMAGE)
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(a) Crystal structure diagrams of RETi3Bi4. (b) The first Brillouin zone (BZ) and two-dimensional projected surface of RETi3Bi4. (c)–(e) Optical images and the corresponding AFM line–scanning profiles of the few-layer flakes of (c) EuTi3Bi4, (d) GdTi3Bi4, and (e) SmTi3Bi4 respectively. (f)–(h) Magnetization versus magnetic field for (f) EuTi3Bi4(2 K, 5 K, 10 K, 15 K, 20 K and 50 K, H//c), (g) GdTi3Bi4(2 K, 5 K, 10 K, 15 K, 20 K and 50 K, H//c) and (h) SmTi3Bi4(3 K, 5 K, 10 K, 15 K, 20 K and 30 K, H//ab plane). (i)–(k) FC–ZFC curves under an external magnetic field of 100 Oe of (i) EuTi3Bi4(H//c), (j) GdTi3Bi4(H//c), and (k) SmTi3Bi4(H//ab) respectively.
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