Journal Article 5 negative thermal expansion 3D graphene metamaterial 1 X-ray scattering 1 functional materials 1 hyperbolically patterned hierarchal structure 1 kagome magnets 1 plus ... magnetic transition 1 magnetoelastic coupling 1 magnetovolume effect 1 muon spin relaxation 1 negative Poisson's ratio 1 negative compressibility 1 neutron powder diffraction 1 out-of-plane vibration 1 powder X-ray diffraction 1 sample environments 1 thermal actuator 1 variable temperature 1 zero thermal expansion 1 moins ...