Competition between spin frustration, lattice instability, and the Jahn-Teller effect in S = 1=2 geometrically frustrated double perovskite fluorides A2BTiF6 (A = K, Rb, Cs; B = Na, K, Rb)
Masato Goto; Hiroaki Ueda; Chishiro Michioka; Kazuyoshi Yoshimura
Journal of the Physical Society of Japan, Oct. 2013, Peer-reviewed