Research/Sitter/MAGNDATA / 0.134_Mn3B7O13I.mcif

Mn₃B₇O₁₃I

MAGNDATA entry 0.134 · source

noncollinear antiferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

ordered ≤ 26 K (−247 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P c′ a 2₁′ BNS 29.101
Point group	m′m2′
Parent space group	P c a 2₁ No. 29
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 8.7603 · b 8.6936 · c 12.3466 Å · α 90° · β 90° · γ 90°
Transition	26 K (−247 °C)
Measured at	1.5 K
Magnetic ions	Mn
Largest moment component	5.3 μ_B
Method	NPD

Symmetry

Stereogram of the magnetic point group: each operation applied to one direction. Filled = upper hemisphere, ring = lower; red operations include time reversal. Lines are mirrors; polygons are 2/3/4/6-fold axes; the centre ring is inversion.

Every structure in P c′ a 2₁′ →

Atom sites · 24 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0.758	0.24	0.252	5.3	0	1.13	5.4191
Mn2	Mn	0.494	0.517	0.512	0	0	−3.8	3.8
Mn3	Mn	0.994	0.014	0.511	0	0	3.8	3.8
I1	I	0.75	0.243	0.508
B1	B	0.499	0.5	0.258
B2	B	0.256	0.25	0.506
B3	B	0	0.995	0.26
B4	B	0.4434	0.251	0.354
B5	B	0.243	0.398	0.181
B6	B	0.907	0.746	0.83
B7	B	0.758	0.906	0.679
O1	O	0.2282	0.246	0.247
O2	O	0.532	0.329	0.281
O3	O	0.379	0.329	0.439
O4	O	0.971	0.156	0.284
O5	O	0.326	0.359	0.078
O6	O	0.159	0.971	0.234
O7	O	0.141	0.174	0.436
O8	O	0.335	0.514	0.236
O9	O	0.181	0.125	0.074
O10	O	0.952	0.594	0.851
O11	O	0.535	0.909	0.857
O12	O	0.913	0.54	0.664
O13	O	0.597	0.945	0.667

Moment components are along the crystal axes a, b, c (μ_B), as magCIF writes them. Symmetry generates the rest of the cell from these sites.

Source

O. Crottaz et al. Ferroelectrics (1997) · doi:10.1080/00150199708222187

Cite the original paper and MAGNDATA, not this mirror.

Mirror note

re-encoded from Mac OS Roman to UTF-8. Differs from the Bilbao original.

Original file

⬇ 0.134_Mn3B7O13I.mcif from MAGNDATA · entry page

sha256 of this copy: bcef8963a49731f398cdf604d10740a8d3dc2d9cc15a73337edc49a64f8ab0aa
This copy was altered (see the mirror note above), so the original will hash differently.