The phrase "academic specialty" is correct and can be used in written English.
For example, "Dr. Johnson is a specialist in Ancient Greek, his academic specialty."
Ron's academic specialty was moral philosophy.
Economic inequality has been an academic specialty at least since Gini first put chalk to chalkboard.
His academic specialty is computer-supported design, particularly in relation to disaster preparedness and response.
She fought for the recognition of psychoanalysis as a distinct discipline and for its establishment as an academic specialty.
That way, companies can narrow their search to a specific university -- say, for its academic specialty or geography (or because an executive is an alumnus).
The bride, whose academic specialty is the history and philosophy of science, was on a Fulbright scholarship, researching a book on 19th-century British philosophy of science.
Many in the newsroom were autodidacts, but a few had very odd academic specialties.
With colleges carving out academic specialties, exact course matches have become increasingly unlikely, making it difficult for the new institution to determine just how many credits to award.
Thinkers and scholars who should have a presence in the intellectual and cultural landscape — whose books, for example, might well be noted in the annual "holiday" listings — are instead known almost entirely in their own religious circles or academic specialties.
Unions and management must also confront market realities: there is considerable competition for teachers in certain academic specialties, like math, and teachers in these fields have to be paid more.
Ashton B. Carter, who built upon academic specialties in medieval history and theoretical physics to become the Pentagon's top expert on budgets and weapons, announced Thursday that he was retiring as deputy defense secretary.
