Does divorce occur by saying "separation" without the intention of divorce, and do intent and intention differ in the ruling on divorce?

If you divorced your wife over the phone with an explicit divorce, it takes effect, whether you intended it or not, and whether you were pleased with it or not.

As for your informing your brother to effect the divorce, if he effects it, the divorce takes place; otherwise, it does not.

And if what occurred between you were allusions to divorce, then it takes effect with the intention of effecting it through those words.