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Title: Spontaneous magnetization in the M[N(CN){sub 2}]{sub 2} (M = Cr, Mn) weak ferromagnets

Abstract

Due to stabilization of relatively strong magnetic coupling, multidimensional coordination polymers consisting of transition metal cations and the dicyanamide ligand. [N(CN){sub 2}]{sup {minus}}, are currently being studied. Homoleptic dicyanamide complexes with octahedral metal sites from 3-D rutile-type architectures. M[N(CN){sub 2}]{sub 2} (M = Co, Ni) exhibit ferromagnetic ordering at 9 and 21 K, respectively, and have been further characterized by neutron diffraction and specific heat measurements. In contrast, interpenetrating M[C(CN){sub 3}]{sub 2} (M = Mn, Fe, Co, Ni, Cu) also have rutile-type networks, but exhibit weak antiferromagnetic coupling while M = V and Cr are strongly antiferromagnetically coupled and exhibit spin frustration. Differences in the magnetic behavior lies in the shorter three-atom spin coupling pathway available for {mu}{sub 3}-[N(CN){sub 2}]{sup {minus}}, while {mu}{sub 3}-[C(CN){sub 3}]{sup {minus}} only provides five-atom pathways. Herein, the authors report the magnetic ordering with a relatively high {Tc} for the weak ferromagnets M[N(CN){sub 2}]{sub 2} (M = Cr, 1; Mn, 2).

Authors:
;  [1]; ;  [2]
  1. Univ. of Utah, Salt Lake City, UT (United States). Dept. of Chemistry
  2. Ohio State Univ., Columbus, OH (United States)
Publication Date:
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
354369
DOE Contract Number:  
FG02-86ER45271; FG03-93ER45504; FG02-96ER12198
Resource Type:
Journal Article
Journal Name:
Inorganic Chemistry
Additional Journal Information:
Journal Volume: 38; Journal Issue: 11; Other Information: PBD: 31 May 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CHROMIUM COMPOUNDS; MANGANESE COMPOUNDS; MAGNETIZATION; CYANAMIDES; FERROMAGNETIC MATERIALS; EXPERIMENTAL DATA

Citation Formats

Manson, J L, Miller, J S, Kmety, C R, and Epstein, A J. Spontaneous magnetization in the M[N(CN){sub 2}]{sub 2} (M = Cr, Mn) weak ferromagnets. United States: N. p., 1999. Web. doi:10.1021/ic9901259.
Manson, J L, Miller, J S, Kmety, C R, & Epstein, A J. Spontaneous magnetization in the M[N(CN){sub 2}]{sub 2} (M = Cr, Mn) weak ferromagnets. United States. https://doi.org/10.1021/ic9901259
Manson, J L, Miller, J S, Kmety, C R, and Epstein, A J. Mon . "Spontaneous magnetization in the M[N(CN){sub 2}]{sub 2} (M = Cr, Mn) weak ferromagnets". United States. https://doi.org/10.1021/ic9901259.
@article{osti_354369,
title = {Spontaneous magnetization in the M[N(CN){sub 2}]{sub 2} (M = Cr, Mn) weak ferromagnets},
author = {Manson, J L and Miller, J S and Kmety, C R and Epstein, A J},
abstractNote = {Due to stabilization of relatively strong magnetic coupling, multidimensional coordination polymers consisting of transition metal cations and the dicyanamide ligand. [N(CN){sub 2}]{sup {minus}}, are currently being studied. Homoleptic dicyanamide complexes with octahedral metal sites from 3-D rutile-type architectures. M[N(CN){sub 2}]{sub 2} (M = Co, Ni) exhibit ferromagnetic ordering at 9 and 21 K, respectively, and have been further characterized by neutron diffraction and specific heat measurements. In contrast, interpenetrating M[C(CN){sub 3}]{sub 2} (M = Mn, Fe, Co, Ni, Cu) also have rutile-type networks, but exhibit weak antiferromagnetic coupling while M = V and Cr are strongly antiferromagnetically coupled and exhibit spin frustration. Differences in the magnetic behavior lies in the shorter three-atom spin coupling pathway available for {mu}{sub 3}-[N(CN){sub 2}]{sup {minus}}, while {mu}{sub 3}-[C(CN){sub 3}]{sup {minus}} only provides five-atom pathways. Herein, the authors report the magnetic ordering with a relatively high {Tc} for the weak ferromagnets M[N(CN){sub 2}]{sub 2} (M = Cr, 1; Mn, 2).},
doi = {10.1021/ic9901259},
url = {https://www.osti.gov/biblio/354369}, journal = {Inorganic Chemistry},
number = 11,
volume = 38,
place = {United States},
year = {1999},
month = {5}
}