Helical screw type magnetic structure of the multiferroic CaMn7O12 with low Cu-doping

被引：24

作者：

Slawinski, W. ^{[1
]}

Przenioslo, R. ^{[1
]}

Sosnowska, I. ^{[1
]}

Petricek, V. ^{[2
]}

机构：

[1] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland

[2] Acad Sci Czech Republ, Inst Phys, Vvi, Prague 18221 8, Czech Republic

来源：

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS | 2012年 / 68卷

关键词：

SUPERSPACE GROUPS; PEROVSKITE;

D O I：

10.1107/S0108768112008038

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The modulated crystal structure and modulated magnetic ordering of the multiferroic CaCuxMn7-xO12 is studied by analysing neutron and synchrotron-radiation (SR) powder diffraction data with a model based on the magnetic super-space group R31'(00 gamma)ts. Both atomic position modulations and magnetic modulations are described with the modulation vector (0, 0, q). The magnetic ordering is a screw-type circular helix where the magnetic moments are perpendicular to the c direction. The temperature dependence of the modulation vector length and the ordered magnetic moments of Mn3+ and Mn4+ ions is given between T = 50 K and the Neel temperature T-N similar or equal to 90 K. The atomic position modulation length L-p and the magnetic modulation length L-m fulfil the relation L-m = 2L(p) at all temperatures between 50 K and T-N.

引用

页码：240 / 249

页数：10

共 50 条

[21] Magnetic order parameter in the perovskite system CaMn7O12
Przenioslo, R
Sosnowska, I
Suard, E
Hansen, T
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2002, 74 (Suppl 1): : S1731 - S1733
[22] Temperature Dependence of Extended X-ray Absorption Fine Structure of Multiferroic CaMn7O12
Zhang, H. G.
Li, Y. T.
Liu, S. L.
Li, B.
Li, Q.
FERROELECTRICS, 2015, 488 (01) : 162 - 169
[23] Structural and Electronic Structure Investigations Across Low Temperature Magnetic Transitions In CaMn7O12: A EXAFS Study
Gautam, Kamini
Shukla, D. K.
62ND DAE SOLID STATE PHYSICS SYMPOSIUM, 2018, 1942
[24] Soft vibrational mode associated with incommensurate orbital order in multiferroic CaMn7O12
Du, Xinyu
Yuan, Renliang
Duan, Lian
Wang, Chong
Hu, Yuwen
Li, Yuan
PHYSICAL REVIEW B, 2014, 90 (10):
[25] Twist of rhombohedra, spin helix, and “giant” polarization in a CaMn7O12 multiferroic crystal
S. A. Pikin
Physics of the Solid State, 2016, 58 : 540 - 544
[26] Twist of rhombohedra, spin helix, and "giant" polarization in a CaMn7O12 multiferroic crystal
Pikin, S. A.
PHYSICS OF THE SOLID STATE, 2016, 58 (03) : 540 - 544
[27] Pressure-induced multiple structural phase transitions on multiferroic CaMn7O12
Ferreira, W. C.
Nonato, A.
Mira, J.
Sanchez-Andujar, M.
Senaris-Rodriguez, M. A.
Yanez-Vilar, S.
Ayala, A. P.
Paschoal, C. W. A.
PHYSICA B-CONDENSED MATTER, 2025, 696
[28] Magnetic and orbital correlations in multiferroic CaMn7O12 probed by x-ray resonant elastic scattering
Gautam, K.
Majid, S. S.
Francoual, S.
Ahad, A.
Dey, K.
Rahn, M. C.
Sankar, R.
Chou, F. C.
Shukla, D. K.
PHYSICAL REVIEW B, 2020, 101 (22)
[29] Nature of low-temperature phase transitions in CaMn7O12
Volkova, O
Arango, Y
Tristan, N
Kataev, V
Gudilin, E
Meier, D
Lorenz, T
Büchner, B
Vasil'ev, A
JETP LETTERS, 2005, 82 (07) : 444 - 446
[30] Role of crystal and magnetic structures in the magnetoelectric coupling in CaMn7O12
Sannigrahi, Jhuma
Khan, Md Salman
Numan, Mohamad
Das, Manjil
Banerjee, Anupam
Le, Manh Duc
Cibin, Giannantonio
Adroja, Devashibhai
Majumdar, Subham
PHYSICAL REVIEW B, 2024, 109 (05)

← 1 2 3 4 5 →