Determination of the first-order hyperpolarizability anisotropy of spherical and cubic magnetic nanoparticles - Gonçalves, Eduardo Sell; Cocca, Leandro Henrique Zucolotto; Araújo, Wagner Wlysses Rodrigues de; Parekh, Kinnari; Oliveira, Cristiano Luis Pinto de; Figueiredo Neto, Antonio Martins; De Boni, Leonardo (Photonics West, 2020)