Magnetic phase diagram of the helimagnetic spinel compound ZnCr2Se4   revisited by small-angle neutron scattering
  We performed small-angle neutron scattering (SANS) measurements on the helimagnetic spinel compound ZnCr2Se4. The ground state of this material is a multi-domain spin-spiral phase, which undergoes domain selection in a magnetic field and reportedly exhibits a transition to a proposed spin-nematic phase at higher fields. We observed a continuous change in the magnetic structure as a function of field and temperature, as well as a weak discontinuous jump in the spiral pitch across the domain-selection transition upon increasing field. From our SANS results we have established the absence of any long-range magnetic order in the high-field (spin-nematic) phase. We also found that all the observed phase transitions are surprisingly isotropic with respect to the field direction. 
A. S. Cameron, Y. V. Tymoshenko, P. Y. Portnichenko, J. Gavilano, V.   Tsurkan, V. Felea, A. Loidl, S. Zherlitsyn, J. Wosnit...
cond-mat.str-el cond-mat.mtrl-sci