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Title: Low-T magnetometry study of S = 1 Q2D [Ni(pyz)2(H2O)2](BF4)2 (pyz = pyrazine)

Technical Report ·
DOI:https://doi.org/10.2172/1343727· OSTI ID:1343727
 [1];  [1];  [2];  [2];  [2];  [3]
  1. Eastern Washington Univ., Cheney, WA (United States)
  2. Univ. of Warwick, Coventry (United Kingdom)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

[Ni(pyz)2(H2O)2](BF4)2 (pyz = N2C4H4) was synthesized by a solvent-free technique and its structure solved by synchrotron X-ray powder diffraction.1 The compound contains S = 1 Ni(II) ions and has tetragonal symmetry. Two-D [Ni(pyz)2(H2O)2]2+ square lattices propagate in the ab-plane and stack along the c-axis (Fig. 1). Water ligands occupy axial sites and form H-bonds with interlayer BF4- ions. SQUID magnetometry shows a possible transition to long-range magnetic order near 3 K. We measured the magnetization of [Ni(pyz)2(H2O)2](BF4)2 as a function of temperature to search for field-induced phase transitions and briefly report those findings here.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-06NA25396
OSTI ID:
1343727
Report Number(s):
LA-UR-17-21124
Country of Publication:
United States
Language:
English