Positive zero-field splitting and unexpected slow magnetic relaxation in the magneto-chemical calibrant HgCo(NCS)4

Magnetochemical standard HgCo(NCS)4 with positive zero-field splitting parameter D displays a slow magnetic relaxation strongly dependent upon the external magnetic field.

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Slow magnetic relaxation in mononuclear seven-coordinate cobalt(ii) complexes with easy plane anisotropy

Dalton Transactions ◽

10.1039/c5dt00785b ◽

2015 ◽

Vol 44 (25) ◽

pp. 11482-11490 ◽

Cited By ~ 62

Author(s):

Lei Chen ◽

Shu-Yang Chen ◽

Yi-Chen Sun ◽

Yu-Mei Guo ◽

Lu Yu ◽

...

Keyword(s):

Magnetic Relaxation ◽

Slow Relaxation ◽

Positive Zero ◽

Pentagonal Bipyramid ◽

Zero Field ◽

Relaxation Behaviour ◽

Zero Field Splitting ◽

Field Splitting ◽

Plane Anisotropy ◽

Slow Magnetic Relaxation

Two mononuclear pentagonal bipyramid cobalt(ii) complexes with positive zero-field splitting D values were demonstrated to exhibit field-induced slow relaxation behaviour.

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Correlating the axial Zero Field Splitting with the slow magnetic relaxation in GdIII SIMs

Chemical Communications ◽

10.1039/d0cc07474h ◽

2021 ◽

Author(s):

Júlia Mayans ◽

Albert Escuer

Keyword(s):

Magnetic Relaxation ◽

Zero Field ◽

Zero Field Splitting ◽

Field Splitting ◽

Slow Magnetic Relaxation

A possible relation between the value of the axial Zero Field Splitting and the occurrence of field-induced slow magnetic relaxation has been established for a new gadolinium(iii) compound.

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Modulation of the coordination environment: a convenient approach to tailor magnetic anisotropy in seven coordinate Co(ii) complexes

Chemical Communications ◽

10.1039/c5cc07397a ◽

2016 ◽

Vol 52 (4) ◽

pp. 753-756 ◽

Cited By ~ 30

Author(s):

Mamon Dey ◽

Snigdha Dutta ◽

Bipul Sarma ◽

Ramesh Ch. Deka ◽

Nayanmoni Gogoi

Keyword(s):

Magnetic Anisotropy ◽

Zero Field ◽

Zero Field Splitting ◽

Field Splitting ◽

Coordination Environment ◽

Zero Field Splitting Parameter ◽

Convenient Approach ◽

Splitting Parameter ◽

Remarkable Deviation

Subtle modulation of the coordination environment in seven coordinate Co(ii) complexes leads to a remarkable deviation in the axial zero field splitting parameter (D) in a predictable fashion.

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Abnormal Magnetic Moment and Zero Field Splitting of Some Nickel (II) Complexes

IRA-International Journal of Applied Sciences (ISSN 2455-4499) ◽

10.21013/jas.v7.n1.p3 ◽

2017 ◽

Vol 7 (1) ◽

pp. 34

Author(s):

Rajeev Ranjan ◽

Navneet Sinha ◽

Sahdeo Kumar ◽

Chandra Mauleshwar Chandra ◽

Shivadhar Sharma

Keyword(s):

Magnetic Moment ◽

Metal Ion ◽

Free Ligand ◽

Tetragonal Distortion ◽

Zero Field ◽

Zero Field Splitting ◽

Absorption Bands ◽

Field Splitting ◽

Zero Field Splitting Parameter ◽

Splitting Parameter

Some complexes of Ni(II) have been prepared with 2-thio-3-acetyl hydantoin (TAHN) and 2-formyl pyridine thiosemicarbazone (FPTS). On the basis of elemental analysis and molar conductivity, the complexes have been formulated as NiL2X2, where L = TAHN or FPTS and X = Cl–, Br–, NCS–, ClO4–. The infrared spectra of complexes and free ligand reveal that the ligand TAHN is co-ordinated through sulphur and acetyl oxygen, while FPTS ligand co-ordinates through heterocyclic nitrogen and sulphur to Ni(II) metal ion. The magnetic moment of these complexes are found to be 3.20-3.25 B.M. The values are greater than value (2.828 B.M) corresponding to two unpaired electrons of a d8-system. The appearance of four absorption bands in their electronic spectra reveal, the tetragonal distortion in the octahedral symmetry of complexes. The zero field splitting parameter(D) and the other crystal field parameters like Dq(xy), Dq(z), Dt have been calculated. The results show that, the tetragonal distortion parameter (Dt) increases in the order of NCS– < Cl– < Br– while the zero field splitting parameter (D) also increases in the same order for both the planer ligands.

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SUPERPOSITION MODEL ANALYSIS FOR THE ZERO-FIELD SPLITTING OFMn2+IN SOME CRYSTALS

Modern Physics Letters B ◽

10.1142/s0217984906012250 ◽

2006 ◽

Vol 20 (30) ◽

pp. 1917-1922 ◽

Cited By ~ 2

Author(s):

VIMAL KUMAR JAIN

Keyword(s):

Lattice Relaxation ◽

Zero Field ◽

Superposition Model ◽

Zero Field Splitting ◽

Intrinsic Parameter ◽

Order Zero ◽

Field Splitting ◽

Zero Field Splitting Parameter ◽

Local Lattice ◽

Splitting Parameter

The Newman superposition model has been applied to second-order zero-field splitting parameter [Formula: see text] taken from the literature for Mn2+in Hg(ClO4)2· 6 H2O , M ″ SiF6·6 H2O (M ″= Fe, Co, Zn ) and M ″ NbOF5·6 H2O (M ″= Co, Zn ). In the calculations, the local lattice relaxation has been taken into account. It is shown that nearly the same value of intrinsic parameter b2=-0.057(8) cm-1is obtained.

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