Observation of a 1/3 magnetization plateau in Pb₂Cu₁₀O₄(SeO₃)₄Cl₇ arising from (Cu²⁺)₇ clusters of corner-sharing (Cu²⁺)₄ tetrahedra

Abstract

Mixed-valence compound Pb2Cu10O4(SeO3)4Cl7 has a complex structure consisting of one nonmagnetic Cu+ (S=0) ion and four nonequivalent magnetic Cu2+ (S=1/2) ions. It orders antiferromagnetically at TN = 10.2 K. At...

Thermodynamic Properties and DFT Study on Highly Frustrated Cr3BO6: Coexistence of Spin-Singlets with Long-Range Magnetic Order

“…A peculiar feature of Cr 3 BO 6 with the norbergite structure is the coexistence of longrange antiferromagnetic order based on Cr2 ions with spin-singlets based on Cr1-Cr1 dimers of S = 3/2 spins. A similar case was recently discussed for mixed-valence copper compound Pb 2 Cu 10 O 4 (SeO 3 ) 4 Cl 7 , which hosts a magnetic network constituted by Cu-Cu dimers and Cu 7 cluster of corner-sharing Cu 4 tetrahedra where each Cu 7 cluster has a S = 3/2 spin arrangement in the ground state [27]. Despite the abundance of magnetically active ions, the latter compound orders antiferromagnetically at rather low temperatures and evidences the sequence of spin-flop transition and 1/3 plateau formation at low temperatures.…”

Analogous Chain Selenite Chlorides Ba2M(SeO3)2Cl2 (M = Cu2+, Ni2+, Co2+, Mn2+) and Pb2Cu(SeO3)2Cl2 with Tunable Spin S: Syntheses and Characterizations

“…Among them, the [SeO 3 ] 2– anion group with a stereochemically active lone electron pair can contribute to the design and synthesis of a large number of diverse novel compounds and provide a rich structural chemistry, particularly for the incorporation with halogen ions forming different anion groups by partial substitution of oxygen atoms. Experimentally, several magnetic selenide halides have been reported, such as Cu 3 Yb(SeO 3 ) 2 O 2 Cl 2 , Cu 3 Bi(SeO 3 ) 2 O 2 X (X = Br, Cl), KCu 5 O 2 (SeO 3 ) 2 Cl 3 , Pb 2 FeCu(SeO 3 ) 4 (H 2 O)Cl, CdCu 2 (SeO 3 ) 2 Cl 2 , , Sr 2 M(SeO 3 ) 2 Cl 2 (M = Cu, Ni, Co), − and Pb 2 Cu 10 O 4 (SeO 3 ) 4 Cl 7 …”

Highly anisotropic 1/3-magnetization plateau in a ferrimagnet Cs2Cu3(SeO3)4·2H2O: topology of magnetic bonding necessary for magnetization plateau

“…Both spin-frustrated and non-spin-frustrated magnetic materials exhibit magnetization plateaus, and a given magnetic compound may exhibit more than one magnetic plateau. Examples with a single magnetization plateau include a 1/3-plateau for Cu 3 V 2 O 7 (OH) 2 , 4 ZnCu 3 (OH) 6 Cl 2 , 5 (CuBr)Sr 2 Nb 3 O 10 6 and Cs 2 CuBr 4 , 7 a 3/7-plateau for Na 2 Cu 7 (SeO 3 ) 4 O 2 Cl 4 , 8 Y 2 Cu 7 (TeO 3 ) 6 Cl 6 (OH) 2 9 and Pb 2 Cu 10 O 4 (SeO 3 ) 4 Cl 7 , 10 a 1/5-plateau for Cu 5 (VO 4 ) 2 (OH) 4 11 and a 3/5-plateau for Na 2 Cu 5 (Si 2 O 7 ) 2 . 12 Examples exhibiting multiple magnetic plateaus include 1/4- and 3/4-plateaus for NH 4 CuCl 3 13 as well as 1/9-, 1/4-, 1/3-, 2/5- and 1/2 plateaus for SrCu 2 (BO 3 ) 2 .…”