Magnetostructural martensitic transformations with large volume changes   and magneto-strains in all-d-metal Heusler alloys
  The all-d-metal Mn2-based Heusler ferromagnetic shape memory alloys Mn50Ni40-xCoxTi10 (x = 8 and 9.5) are realized. With a generic comparison between d-metal Ti and main-group elements in lowering the transformation temperature, the magnetostructural martensitic transformations are established by further introducing Co to produce local ferromagnetic Mn-Co-Mn configurations. A 5-fold modulation and (3, -2) stacking of [00 10] of martensite are determined by XRD and HRTEM analysis. Based on the transformation, a large magneto-strain of 6900 ppm and a large volume change of -2.54% are observed in polycrystalline samples, which makes the all-d-metal magnetic martensitic alloys of interest for magnetic/pressure multi-field driven applications. 
Z. Y. Wei, E. K. Liu, Y. Li, X. L. Han, Z. W. Du, H. Z. Luo, G. D.   Liu, X. K. Xi, H. W. Zhang, W. H. Wang, G. H. Wu
cond-mat.mtrl-sci