The radio programme "Tercer Harmònic" from Radio Kanal Barcelona is a science and technology outreach programme for the general public. Communications, radio, digital education, internet, social networks, etc. are some of the main topics. Ignasi Fina, from the MULFOX group, was at the programme on May 16, 2018, in the section "The materials of the future" to talk about antiferromagnetic materials.