<p><span>Wireless sensor networks (WSNs) have received significant scholarly attentionwithin the scientific community lately. The use of small and energy efficient devices with restricted computing capabilities has gained traction in various fields application, including environmental monitoring, target tracing, medical health observation. Node localization is a fundamental system p...

The magnetocaloric properties of a thin spacer gadolinium (Gd) between layers "strong" ferromagnets (relatively high Curie temperatures) are studied experimentally. It is found that, at room temperatures, the efficiency Delta S/Delta H (Delta S isothermal magnetic entropy change and range applied fields) Gd thickness 3 nm up to two orders in magnitude higher than this value an...