Magnetic properties of the double trillium lattice antiferromagnet KBaCr2(PO4)3
Journal Article
·
· Physical Review. B
- Indian Institute of Science Education and Research Thiruvananthapuram (India)
- Ames Laboratory (AMES), Ames, IA (United States)
- Ames Lab., and Iowa State Univ., Ames, IA (United States)
- Univ. of Leipzig (Germany)
Trillium lattices formed by corner-shared triangular units are the platform for magnetic frustration in three dimensions. Herein, we report structural and magnetic properties of the Cr-based (S = 3/2) double trillium lattice material KBaCr2(PO4)3 studied by x-ray diffraction, dc and ac magnetization, heat capacity, thermal conductivity, and 31P nuclear magnetic resonance (NMR) measurements complemented by density-functional band-structure calculations. Magnetization, heat capacity, and 31P NMR measurements reveal the magnetic transition at TN1 ≃ 12.5 K in zero field followed by another transition (TN2) at low temperatures in weak applied fields. The 31P spin-lattice relaxation rate in the ordered state follows the T3 behavior indicative of the two-magnon Raman process. Finally, the spin lattice of KBaCr2(PO4)3 comprises two crystallographically nonequivalent ferromagnetic sublattices that are coupled antiferromagnetically, thus eliminating frustration in this trillium network and leading to weak ferromagnetism in the vicinity of TN1.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
- Grant/Contract Number:
- AC02-07CH11358
- OSTI ID:
- 2481292
- Report Number(s):
- AL-J--675
- Journal Information:
- Physical Review. B, Journal Name: Physical Review. B Journal Issue: 22 Vol. 110; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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