A multiferroic material [NH2-CH+-NH2]Co(HCOO)3 of metal-organic frameworks with weak ferromagnetism and dielectric relaxation | Zendy

Jiangqi Luo | Zendy; Qiong Fu | Zendy; Haiyun Wang | Zendy; Dongmei Zhao | Zendy; Laihui Luo | Zendy; Weiping Li | Zendy

Open Access

A multiferroic material [NH₂-CH⁺-NH₂]Co(HCOO)₃ of metal-organic frameworks with weak ferromagnetism and dielectric relaxation

Author(s) -

Jiangqi Luo,

Qiong Fu,

Haiyun Wang,

Dongmei Zhao,

Laihui Luo,

Weiping Li

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4993508

Subject(s) - multiferroics , ferromagnetism , materials science , coercivity , dielectric , magnetization , metal organic framework , octahedron , relaxation (psychology) , condensed matter physics , thermal stability , inorganic chemistry , crystallography , chemistry , ferroelectricity , crystal structure , magnetic field , physics , organic chemistry , social psychology , psychology , optoelectronics , adsorption , quantum mechanics

In order to seek for the single-phase multiferroic metal-organic frameworks (MOFs) materials, we prepared a multiferroic material [NH2-CH+-NH2]Co(HCOO)3 (FMDCo) by solvothermal method. We found that it had weak ferromagnetism below 12.5 K with the coercive fields (Hc) of 560 Oe, remnant magnetization (Mr) of 7.67 emu/g and saturation magnetization (Ms) of 10.3 emu/g and exhibited obvious dielectric relaxation. The octahedral metal ions (Co2+) were linked by formate (HCOO-) ligands. The AmineH+ cation (NH2-CH+-NH2) were located within the cube-like cavities of the framework and formed extensive hydrogen bonds with the framework. This improved the phase transition temperature and thermal stability. This finding helps to understand the nature of magnetic and electric ordering in the MOFs

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