Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2012-03-01
J. Phys. Cond. Mat 2012 24 166001
Physics
Condensed Matter
Strongly Correlated Electrons
20 pages, 7 figures
Scientific paper
10.1088/0953-8984/24/16/166001
The magnetic properties of polycrystalline samples of Ba3Cu3In4O12 (In-334) and Ba3Cu3Sc4O12 (Sc-334) are reported. Both 334 phases have a structure derived from perovskite, with CuO4 squares interconnected to form half-twist ladders along the c-axis. The Cu-O-Cu angles, ~ 90o, and the positive Weiss temperatures indicate the presence of significant ferromagnetic (FM) interactions along the Cu ladders. At low temperatures, T < 20 K, sharp transitions in the magnetic susceptibility and heat capacity measurements indicate three-dimensional (3D) antiferromagnetic (AFM) ordering at TN. TN is suppressed on application of a field and a complex magnetic phase diagram with three distinct magnetic regimes below the upper critical field can be inferred from our measurements. The magnetic interactions are discussed in relation to a modified spin-1/2 FM-AFM model and the 334 half-twist ladder is compared to other 2-rung ladder spin-1/2 systems.
Broholm Collin L.
Cava Robert. J.
Dutton S. E.
Kumar Manish
Soos Zoltán G.
No associations
LandOfFree
Dominant ferromagnetism in the spin-1/2 half-twist ladder 334 compounds, Ba3Cu3In4O12 and Ba3Cu3Sc4O12 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dominant ferromagnetism in the spin-1/2 half-twist ladder 334 compounds, Ba3Cu3In4O12 and Ba3Cu3Sc4O12, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dominant ferromagnetism in the spin-1/2 half-twist ladder 334 compounds, Ba3Cu3In4O12 and Ba3Cu3Sc4O12 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-165545