"The meeting was held in a business-like atmosphere," IAEA said in a statement which failed to provide any further detail.
"The two sides discussed the issue of the provision of fuel for the Tehran research reactor and exchanged views on the possible modalities for its realisation", said IAEA spokeswoman Gill Tudor.
According to Xinhua report, Mottaki is in Austria to gather the country's support against any new UN sanctions against Iran.
Meanwhile, Austria's Foreign Minister Michael Spindelegger has asked Iran to cooperate with the West inorder to avoid sanctions.
"I hope it will not have to come to this sanctions and that Iran is ready to cooperate with the international community," Mr. Spindelegger said at a joint news conference with Mottaki.
Iran agreed to export low-enriched uranium abroad for further re-processing. However, it later said that the fuel swap must take place inside its territory and simultaneously.
The West has opposed Iran's nuclear plans alleging that Iran's nuclear program is aimed at making atomic bombs.
Tehran refuted it saying that it was only for peaceful purpose.