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锰掺杂铋钐铁氧体陶瓷的结构转变与磁性能

Structural transition and magnetic properties of Mn doped BiSmFeO ceramics.

作者信息

Hien N T, Vinh N D, Dang N V, Trang T T, Van H T, Thao T T, Hue L T, Tho P T

机构信息

Ceramics and Biomaterials Research Group, Advanced Institute of Materials Science, Ton Duc Thang University Ho Chi Minh City Vietnam

Faculty of Applied Sciences, Ton Duc Thang University Ho Chi Minh City Vietnam.

出版信息

RSC Adv. 2020 Mar 26;10(20):11957-11965. doi: 10.1039/d0ra01642j. eCollection 2020 Mar 19.

DOI:10.1039/d0ra01642j
PMID:35496597
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9050850/
Abstract

We investigated the effects of Mn doping on the crystal structure, phonon vibration, and magnetic properties of BiSmFeO ceramics. Mn doping effectively modified the rhombohedral symmetry and induced a structural transition from an 3 rhombohedral to orthorhombic structure. Magnetic measurements revealed a weak ferromagnetic behavior, which was related to the canted antiferromagnetic order of the structure. The cycloidal spin structure of the 3 phase could not be suppressed by substitution of Mn at the Fe site. Studies on the self-phase transition and electric field-induced structural transition revealed many changes in coercivity and remanent magnetization, which are believed to originate from the 3/ phase switching along with spin frustration. Observations of the field step-dependent hysteresis loop and the ferromagnetic-like hysteresis loop after poling in an electric field provided direct evidence of phase boundary (PB) ferromagnetism and magnetic coupling at the PB.

摘要

我们研究了锰掺杂对铋钐铁氧体陶瓷晶体结构、声子振动和磁性能的影响。锰掺杂有效地改变了菱面体对称性，并诱导了从三方菱面体结构到正交结构的结构转变。磁性测量揭示了一种弱铁磁行为，这与结构的倾斜反铁磁序有关。在铁位处用锰替代并不能抑制三方相的摆线自旋结构。对自相变和电场诱导结构转变的研究揭示了矫顽力和剩余磁化强度的许多变化，这些变化被认为源于三方相/相的转变以及自旋挫折。对场阶跃依赖的磁滞回线和在电场中极化后的类铁磁滞回线的观察提供了相界（PB）铁磁性和PB处磁耦合的直接证据。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/80a2621efbb7/d0ra01642j-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/62480bc73b50/d0ra01642j-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/cc6624536a98/d0ra01642j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/889474dab572/d0ra01642j-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/e6199bc03e07/d0ra01642j-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/ea1785501835/d0ra01642j-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/80a2621efbb7/d0ra01642j-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/62480bc73b50/d0ra01642j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/953bee9dbc6e/d0ra01642j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/a94dc8dd2859/d0ra01642j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/3971b70f5b50/d0ra01642j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/cc6624536a98/d0ra01642j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/889474dab572/d0ra01642j-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/e6199bc03e07/d0ra01642j-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/ea1785501835/d0ra01642j-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ebb0/9050850/80a2621efbb7/d0ra01642j-f9.jpg

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