X-Ray Study of Crystal Structure of ND_4D_2PO_4 in the Antiferroelectric Phase
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The crystal structure of 97% deuterated rtmmonium dihydrogen phosphate(DADP) is analyzed in the antiferroelectric (AFE) phase. Cornparing the AFL distor-tion of PC tetrahedrons and the change of the position of the N atom at the phasetransition temperature (I.) in DADP with those in ADP, the author found that thedistortion and the change of the position are larger in DADP than in ADP. This isconsistent with the conclusion obtained by the electron spin resonance (F,SR) study.In the AFE phase the AFL distortion of PG. tetrahedrons and the position of the Natom do not depend on temperature remarkably. These do not agree with the ESRdata.
- 社団法人日本物理学会の論文
- 1988-04-15
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