Simultaneous Antiferromagnetic Order and Spin-Glass-like Behavior in MnAsO4
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- 作者：Miguel A. G. Aranda ; J. Paul Attfield ; Elaine Batchelor ; Greg P. Shields ; Sebastiá ; n Bruque ; and Mercedes Gabá ; s
- 刊名：Inorganic Chemistry
- 出版年：1998
- 出版时间：March 23, 1998
- 年：1998
- 卷：37
- 期：6
- 页码：1329 - 1335
- 全文大小：165K
- 年卷期：v.37,no.6(March 23, 1998)
- ISSN：1520-510X
文摘
A low-temperature time-of-flight neutron powder diffraction studyof a simple new solid, MnAsO4, in a samplealso containing 20% Mn2As2O7has been performed. MnAsO4 orders magnetically at14.5(5) K, and the unusualantiferromagnetic structure below this temperature has been determined.Only half of the Mn3+ spins areordered,and the remaining "idle" spins show some spin-glass behaviorevidenced by susceptibility measurements. Theordered moment is reduced to a value of 2.6 
ntities/mgr.gif">B byfrustration. It is not possible to determine which of thetwocrystallographically inequivalent Mn sublattices is magneticallyordered and which is idle. The antiferromagneticstructure of the minority phaseMn2As2O7 which orders at10.5(5) K has also been determined.
ntities/mgr.gif">B byfrustration. It is not possible to determine which of thetwocrystallographically inequivalent Mn sublattices is magneticallyordered and which is idle. The antiferromagneticstructure of the minority phaseMn2As2O7 which orders at10.5(5) K has also been determined.