Charge-response of magnetization in nanoporous Pd-Ni alloys

This work reports isothermal reversible variation of magnetization in nanoporous Pd-Ni alloys subjected to continuous charging and discharging of the sample in aprotic electrolyte medium. Polarizing metal surface with excess charge also finds strain in the nanoporous structure using the sample as working electrode. Therefore, it is proposed that pressure induced by strain is the key parameter for the observed reversible magnetization in the transition metal alloys. - Research highlights: → Nanoporous Pd-Ni alloys respond to electrochemical charging. → The effect is reversible during cyclic charging. → Charging also results strain in the nanoporous structure. → Therefore, magnetism is better correlated with strain/pressure.