Direct observation of noncollinear order of Co and Mn moments in multiferroic Mn_(0.85)Co_(0.15)WO_4

J. Herrero-Martin; A. N. Dobrynin; C. Mazzoli; P. Steadman; P. Bencok; R. Fan; A. A. Mukhin; V. Skumryev; J. L. Garcia-Munoz

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Direct observation of noncollinear order of Co and Mn moments in multiferroic Mn_(0.85)Co_(0.15)WO_4

机译：直接观察多铁性Mn_（0.85）Co_（0.15）WO_4中Co和Mn矩的非共线阶数

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Doping Mn_(1-x)Co_xWO_4 with Co produces a rich magnetic phase diagram with a large number of ferroelectric phases. We present resonant x-ray magnetic scattering experiments in the known collinear AF4 phase of multiferroic Mn_(0.85)Co_(0.15)WO_4 showing that Mn and Co spins point to different directions despite they randomly occupy the same crystallographic site. The resultant noncollinear exotic spin configuration is determined by a competition of Mn~(2+) and Co~(2+) magnetic anisotropies and demands a reexamination of the ferroelectric phase diagram of this model family beyond the previous average description of its magnetic orders.

机译：用Co掺杂Mn_（1-x）Co_xWO_4会生成具有大量铁电相的富磁相图。我们目前在多铁性Mn_（0.85）Co_（0.15）WO_4的已知共线AF4相中进行共振x射线磁散射实验，结果表明，尽管Mn和Co随机占据相同的晶体学位置，但它们指向不同的方向。所产生的非共线奇异自旋构型是由Mn〜（2+）和Co〜（2+）磁各向异性的竞争所决定的，并且需要对该模型族的铁电相图进行重新检验，超出其磁阶的先前平均描述。

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来源
《Physical review》 |2015年第22期|220403.1-220403.5|共5页
作者
J. Herrero-Martin; A. N. Dobrynin; C. Mazzoli; P. Steadman; P. Bencok; R. Fan; A. A. Mukhin; V. Skumryev; J. L. Garcia-Munoz;
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ALBA Synchrotron Light Source, Ctra. BP 1413, km 3.3, E-08290 Cerdanyola del Valles, Barcelona, Spain,Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), E-08193 Bellaterra, Barcelona, Spain;

Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom;

Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci, 32,Ⅰ-20133 Milano, Italy;

Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom;

Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom;

Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom;

Prokhorov General Physics Institute, Russian Academy of Science, Vavilov Street, 38, 119991 Moscow, Russian Federation;

Institucio Catalana de Recerca i Estudis Avancats, E-08010 Barcelona, Spain,Departament de Fisica, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain;

Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), E-08193 Bellaterra, Barcelona, Spain;

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antiferromagnetics;

机译：反铁磁;

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Direct observation of noncollinear order of Co and Mn moments in multiferroic Mn_(0.85)Co_(0.15)WO_4

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