Joint tenants - if one dies, the other inherits the whole asset.
Tenants in common - if one dies, the portion belonging to the other can be left in their will wherever they want (portion is not necessarily half - can be more or less)
So yes, tenants in common might suit your situation. However if one of you died and the children of the other wanted their share, would the survivor then be put out of their family home - i.e. have to sell up in order to give the children their share of their inheritance? Would then the survivor be left with some cash, but not enough to buy again?
If you want to leave some assets for our children, maybe what you should do is put a life assurance policy in place on your own life, and specify in your will that the proceeds are to go to your children (in lieu of their share of the family home).
This means that your children have access to cash, rather than having to sell a property to realise a share in it, and your partner can inherit the full family home and not have to sell up.
If you wanted your partner not to have full ownership, but to still have somewhere to live, you could specify in your will that they are to have a life interest in your half of the property (so they can live there for the rest of their life).
Then, on their death, you can specify that your share of the property passes to your children.
All the above needs to be addressed and documented properly and clearly, so please consult a solicitor! Also to avoid family infighting, make it clear to everyone what you intend to happen - so no one gets a nasty surprise when the will is read. (in Ireland there's a saying that if there's a death there is a party/wake, and then a row over the will)