Limited Recourse Borrowing Arrangements (LRBA) have increased the popularity of property purchases in SMSFs.
SMSFs can use borrowed monies to purchase a single asset, or a collection of identical assets that have the same market value. The SMSF trustees receive the beneficial interest in the purchased asset but the legal ownership of the asset is held on trust (the holding trust).
The upside is that with an LRBA, your whole super fund is not at risk if the loan is defaulted. There are also restrictions on the way a debtor can recover their funds.