Realizing square and diamond lattice S=1/2 Heisenberg antiferromagnet models in the α and β phases of the coordination framework,

Aly H. Abdeldaim

¹

,

Teng Li

²

,

Lewis Farrar

³

et al.

Magnetism on the stretched diamond lattice in lanthanide orthotantalates

“…7, inset). Since the expected maximum entropy is R ln 2 = 5.76 J mol −1 K −1 for Ising spins with effective spin of 1 2 , the remaining entropy change is assumed to occur below the lowest temperature measured (1.8 K) which has nonzero C mag /T and is close to T N .…”

“…Magnetism on diamondlike lattices has been widely studied in both coordination frameworks [1] and ceramic systems, including materials with the scheelite crystal structure such as KRuO 4 [2] and KOsO 4 [3] as well as cubic spinels AB 2 O 4 with a magnetic ion on the A site [4][5][6][7]. The perfect diamond lattice is bipartite and unfrustrated, expected to order into a collinear antiferromagnetic ground state if only nearest-neighbor interactions (J 1 ) are considered [8].…”

“…In the mean-field approximation, the average exchange interaction J1 may be calculated as J1 = [3k B θ CW ]/[2nJ (J + 1)], where J is the spin quantum number and n is the number of nearest-neighbor spins[60]. Using an effective spin of1…”

Uncovering the S=12 Kagome Ferromagnet within a Family of Metal–Organic Frameworks

“…In the hunt for such novel phenomena of materials, more attention is being paid to magnetic inorganic–organic hybrid systems as promising alternatives to traditionally more widely studied inorganic compounds. − For instance, in the search for unambiguous material realizations of kagome magnets, the ability to separate inorganic kagome layers with organic components is an appealing material design strategy for overcoming the issue of magnetic site disorder that is common in purely inorganic systems. − Metal–organic frameworks (MOFs) make up one such class of inorganic–organic hybrid materials, consisting of metal nodes joined by multitopic organic linkers to form (often porous) crystalline structures …”

Magnetism on the stretched diamond lattice in lanthanide orthotantalates

“…Magnetism on diamond-like lattices has been widely studied in both coordination frameworks [1] and ceramic systems, including materials with the scheelite crystal structure such as KRuO 4 [2] and KOsO 4 [3] as well as cubic spinels AB 2 O 4 with a magnetic ion on the A-site [4][5][6][7]. The perfect diamond lattice is bipartite and unfrustrated, expected to order into a collinear antiferromagnetic ground state if only nearest-neighbor interactions (J 1 ) are considered [8].…”