Home / Magnets / Sm2Co9Mn (MAG-000269)

Sm2Co9Mn

Ternary

Crystal Structure

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Overview

Magnetic flux density1.100T
Magnetization density0.094μB Å−3
Total spin moment47.967μB cell−1
MP-reference hull distance0.034eV atom−1
Cell volume508.290Å3
Number of atoms36atoms
Chemical system Sm-Co-Mn Calculation Converged

Final Relaxed Cell

Calculated-cell formulaCo27Mn3Sm6
a, b, c4.950, 4.950, 23.955 Å
α, β, γ90.000, 90.000, 120.000°
Cell volume508.290 Å3
Volume per atom14.119 Å3 atom−1
Formula units, Z3

Final Symmetry

Space groupR3m (No. 160)
Crystal systemTrigonal
Point group3m
Hall symbolR 3 -2"
Pearson symbolhR12

Occupied Wyckoff Sites

SiteElementWyckoff positionMultiplicitySite symmetry
Sm1Sm3a33m
Sm2Sm3a33m
Mn1Mn3a33m
Co1Co9b9.m
Co2Co9b9.m
Co3Co3a33m
Co4Co3a33m
Co5Co3a33m

Prototype Relationship

Cell Magnetization

Total spin moment47.967 μB cell−1
Moment per atom1.332 μB atom−1
Magnetization density0.094 μB Å−3
μ0M1.100 T
PAW-sphere total49.095 μB cell−1
Interstitial remainder-1.128 μB cell−1

Sublattice Magnetization

Rare-earth sublattice-1.455 μB
Transition-metal sublattice50.550 μB
RE–TM alignmentAntiparallel

Element-Resolved Moments

ElementAtomsPAW-sphere totalμBMean per atomμB atom−1RangeμB
Sm6-1.455-0.243-0.270 to -0.215
Mn311.0073.6693.669 to 3.669
Co2739.5431.4651.368 to 1.541

Site-Resolved PAW-Sphere Moments

SiteElementWyckoffsμBpμBdμBTotalμB
1Sma-0.023-0.024-0.222-0.270
2Sma-0.016-0.020-0.179-0.215
3Sma-0.016-0.020-0.179-0.215
4Sma-0.016-0.020-0.179-0.215
5Sma-0.023-0.024-0.222-0.270
6Sma-0.023-0.024-0.222-0.270
7Mna0.035-0.0043.6383.669
8Mna0.035-0.0043.6383.669
9Mna0.035-0.0043.6383.669
10Cob-0.011-0.0421.5611.507
11Cob-0.011-0.0421.5611.507
12Cob-0.011-0.0421.5611.507
13Cob-0.011-0.0421.5611.507
14Cob-0.011-0.0421.5611.507
15Cob-0.011-0.0421.5611.507
16Cob-0.011-0.0421.5611.507
17Cob-0.011-0.0451.4251.368
18Cob-0.011-0.0451.4251.368
19Cob-0.011-0.0451.4251.368
20Cob-0.011-0.0451.4251.368
21Cob-0.011-0.0421.5611.507
22Cob-0.011-0.0421.5611.507
23Cob-0.011-0.0451.4251.368
24Cob-0.011-0.0451.4251.368
25Cob-0.011-0.0451.4251.368
26Coa-0.013-0.0521.6061.541
27Coa-0.013-0.0521.6061.541
28Coa-0.013-0.0521.6061.541
29Cob-0.011-0.0451.4251.368
30Cob-0.011-0.0451.4251.368
31Coa0.006-0.0471.5691.528
32Coa0.006-0.0471.5691.528
33Coa0.002-0.0391.5231.487
34Coa0.006-0.0471.5691.528
35Coa0.002-0.0391.5231.487
36Coa0.002-0.0391.5231.487

Convex Hull: Sm-Co-Mn

Energy above hull 0.034 eV/atom Reference set loading Candidates on this hull loading
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VASP Calculation

MethodCollinear spin-polarized DFT
Exchange-correlationPBE
Plane-wave cutoff520.0 eV
PrecisionNormal
Electronic convergence0.0001 eV
Ionic convergence-0.01 eV Å−1
Initial MAGMOM9*5.0 27*2.0
RelaxationIBRION 1, ISIF 3, NSW 100
View exact INCAR
ADDGRID = True
ALGO = Normal
EDIFF = 0.0001
EDIFFG = -0.01
ENCUT = 520.0
IBRION = 1
ISIF = 3
ISMEAR = 1
ISPIN = 2
LAECHG = False
LASPH = True
LCHARG = False
LMAXMIX = 6
LORBIT = 11
LREAL = Auto
LWAVE = False
MAGMOM = 9*5.0 27*2.0
NCORE = 4
NELM = 120
NSW = 100
POTIM = 0.2
PREC = Normal
SIGMA = 0.05

Brillouin-Zone Sampling

SchemeGamma
Mesh5 × 5 × 1
Maximum reciprocal spacing0.29315 Å−1
View exact KPOINTS
pymatgen with grid density = 1150 / number of atoms
0
Gamma
5 5 1

PAW Potentials

ElementVASP TITELZVALENMAXeV
SmPAW_PBE Sm_3 07Sep200011.000177.087
MnPAW_PBE Mn_pv 07Sep200013.000269.865
CoPAW_PBE Co 06Sep20009.000267.969