Magnetic properties of a binary mixture of paramagnetic metallomesogens
Conference
·
OSTI ID:20034161
Magnetic properties of a binary mixture of mesogenic tetraphenylporphyrin Cu(II) and VO(IV) complexes are reported. These mesogens show two lamellar mesophases (D{sub L} and D{sub LC}) and a binary phase diagram revealed that each mesophase is miscible. The magnetic properties were investigated by magnetization measurements using SQUID. It was found that the magnetization of 1:1 mixture (mole% base) was larger than those of the pure compounds below ca. 190 K, while 1:3 and 3:1 mixtures showed the decrease of magnetization in the full range of temperature in which the measurements were carried out. It was shown that {chi}{sup {minus}1} vs. T plots did not obey Curie-Weiss law. For the VO(IV) complex and 1:1 mixture, stepwise changes could be recognized at the temperatures corresponding to the phase transitions. 1:1 mixture as well as Cu(II) and VO(IV) complexes totally involve antiferromagnetic interaction. However, ferromagnetic behavior in {chi}{sup {minus}1} vs. T plots was seen about D{sub L}--D{sub LC} phase transition.
- Research Organization:
- Osaka National Research Inst., Ikeda (JP)
- OSTI ID:
- 20034161
- Country of Publication:
- United States
- Language:
- English
Similar Records
Synthesis, structural determination and magnetic properties of layered hybrid organic-inorganic, iron (II) propylphosphonate, Fe[(CH{sub 3}(CH{sub 2}){sub 2}PO{sub 3})(H{sub 2}O)], and iron (II) octadecylphosphonate, Fe[(CH{sub 3}(CH{sub 2}){sub 17}PO{sub 3})(H{sub 2}O)]
Magnetic properties of Y sub 2 Cu sub 2 O sub 5 , Y sub 2 BaCuO sub 5 , and Y sub 2 Ba sub 2 O sub 5 compounds
Journal Article
·
Tue Feb 14 23:00:00 EST 2006
· Journal of Solid State Chemistry
·
OSTI ID:20784898
Magnetic properties of Y sub 2 Cu sub 2 O sub 5 , Y sub 2 BaCuO sub 5 , and Y sub 2 Ba sub 2 O sub 5 compounds
Journal Article
·
Tue Jan 31 23:00:00 EST 1989
· Superconductivity; (USA)
·
OSTI ID:6861661