quick dirty way 1:
in view one
sap.ui.getCore().setModel(yourModel, "yourmodelname");
in your second view controller(init),
var oModel= sap.ui.getCore().getModel( "yourmodelname");
this.getView().setModel(oModel)
quick dirty way 2:
when you initially create the model, do like this
myglobalModel=**create your model*****
in your second view controller(init),
this.getView().setModel(myglobalModel)