Ferromagnetic Cu-II-Cu-II exchange interactions in a polyoxomolybdate-based nanocluster

Kögerler P, Müller A (2003)
In: JOURNAL OF APPLIED PHYSICS. 93. AMER INST PHYSICS: 7101-7102.

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Abstract
We present initial magnetic properties and a simple Heisenberg model for a recently isolated new member of the {Mo57M6}-type family, a nanometer-sized polyoxomolybdate cluster anion comprising a triangular Cu-6(II) prism. The exchange interactions between the six s=1/2 spin centers are weak compared to the exchange found for other members of the {Mo57M6} cluster family with M=Fe-II, Fe-III, and V-IV but display ferromagnetic exchange interactions of Cu-II-O-Mo-VI-O-Cu-II pairs, i.e., within two equilateral Cu-3(II) triangles. The exchange interaction between the two triangles is antiferromagnetic. The observed temperature dependence of chiT is described well by a Heisenberg model that employs a ferromagnetic intratriangle exchange constant J(1)=1.9 K and antiferromagnetic intertriangle coupling of J(2)=-1.4 K that eventually results in an S=0 ground state. (C) 2003 American Institute of Physics.
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Kögerler P, Müller A. Ferromagnetic Cu-II-Cu-II exchange interactions in a polyoxomolybdate-based nanocluster. In: JOURNAL OF APPLIED PHYSICS. Vol 93. AMER INST PHYSICS; 2003: 7101-7102.
Kögerler, P., & Müller, A. (2003). Ferromagnetic Cu-II-Cu-II exchange interactions in a polyoxomolybdate-based nanocluster. JOURNAL OF APPLIED PHYSICS, 93(10), 7101-7102.
Kögerler, P., and Müller, A. (2003). “Ferromagnetic Cu-II-Cu-II exchange interactions in a polyoxomolybdate-based nanocluster” in JOURNAL OF APPLIED PHYSICS, vol. 93, (AMER INST PHYSICS), 7101-7102.
Kögerler, P., & Müller, A., 2003. Ferromagnetic Cu-II-Cu-II exchange interactions in a polyoxomolybdate-based nanocluster. In JOURNAL OF APPLIED PHYSICS. no.93 AMER INST PHYSICS, pp. 7101-7102.
P. Kögerler and A. Müller, “Ferromagnetic Cu-II-Cu-II exchange interactions in a polyoxomolybdate-based nanocluster”, JOURNAL OF APPLIED PHYSICS, vol. 93, AMER INST PHYSICS, 2003, pp.7101-7102.
Kögerler, P., Müller, A.: Ferromagnetic Cu-II-Cu-II exchange interactions in a polyoxomolybdate-based nanocluster. JOURNAL OF APPLIED PHYSICS. 93, p. 7101-7102. AMER INST PHYSICS (2003).
Kögerler, Paul, and Müller, Achim. “Ferromagnetic Cu-II-Cu-II exchange interactions in a polyoxomolybdate-based nanocluster”. JOURNAL OF APPLIED PHYSICS. AMER INST PHYSICS, 2003.Vol. 93. 7101-7102.
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