Ferrimagnetic copper chloride hydroxide

Abstract

Magnetic properties of copper chloride hydroxide were studied by using a superconducting quantum interference device. The coercivity of this material was more than 10 000 Oe at 2 K, which is the highest observed in the copper compounds. The magnetic susceptibility as a function of temperature revealed ferrimagnetism in the sample.

Fabrication and magnetic characteristic of ferrimagnetic bulk Mn4N

“…For θ smaller than zero and ζ larger than zero, it is regarded as ferrimagnetism [13]. For our sample, by data fitting, Weiss temperature is θ = −1414 K and ζ = 570 K. The Weiss temperature θ is far below 0 K and ζ is larger than zero, indicating the existence of ferrimagnetism in the sample.…”

Layered hybrid organic–inorganic nanobelts exhibiting a field-induced magnetic transition

“…In order to determine which of the two possibilities took place in our sample we fitted the temperature dependence of inverse susceptibility 1/(w À w 0 ) above the Curie temperature according to molecular field theory (see for example ref. 46 and references therein) with a function: 1/(w À w 0 ) = (T À W)/C À B/(T À W 0 ).…”

BaMn9II(VO4)6(OH)2: a homospin ferrimagnet with a broken spinel-lattice of B-sites

“…For BaMn 9 II -(VO 4 ) 6 (OH) 2 , all of the Mn 2+ ions seem to form a broken spin lattice of B-sites in spinels with a high frustration effect. Thus we suggest that the ferrimagnetic ground state of BaMn 9 II (VO 4 ) 6 (OH) 2 may be due to the spins of Mn 2+ ions arranged in a geometrically frustrated sub-lattice, which is similar to Cu 2 Cl(OH) 3 20 and SrFe 3 (PO 4 ) 3 O. 21 To judge whether spin frustration occurs in a magnetic system, an empirical measurement has been suggested by defining the value of f = |θ CW |/T c , where θ CW is the Weiss temperature and T c is the ordering temperature.…”

“…20 Removing nonmagnetic O atoms and OH groups from the building units {Mn 22 O 84 (OH) 6 } ∞ , the 3D topological spin network of magnetic Mn 2+ ions is shown in Fig. 4a.…”

“…However, such distorted reverse triangular dipyramids are quite similar to those in Cu 2 Cl(OH) 3 with Cu 7 (μ 3 -OH). 20 Removing nonmagnetic O atoms and OH groups from the building units {Mn 22 O 84 (OH) 6 } ∞ , the 3D topological spin network of magnetic Mn 2+ ions is shown in Fig. 4a.…”