Consequently, polycrystalline ceramics with the PTCR effect can be treated with a strong oxidizing atmosphere to improve the PTCR effect, and the enhancement effect is in the following order from strong to weak: F > Cl > O > Br > I [72]. Wide Curie temperature range PTCR In practice, ...
Specifically, a weak electrolyte with a relatively low ionization constant as a reactant is more likely to lead to one-dimensional product growth, which is conducive to the control of the product’s particle size [23]. In this experiment, we selected barium hydroxide produced by the reaction ...