Comparative Optical Absorption Studies of K_2NiF_4 and KNiF_3

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概要

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• The absorption spectrum of K_3NiF_4 crystal has been measured at 77°K and compared with that of KNiF_3 from the point of view of the magnetic ordering in the crystals. The smaller shifts of band maxima with temperature in K_2NiF_4 are attributed to the smaller Neel temperature of the crystal. The extra line observed in the ^1E_<g^a> band is compared with similar line in KNiF_3 and the molecular field approximation is found to give a reasonably good account of the observed results. The absorption bands in the ultraviolet region arising from the simultaneous electronic excitation of two nickel ions are discussed.

• 社団法人応用物理学会の論文
• 1968-10-05

著者

• Tiwari J.

  Department Of Physics Allahabad University

• MEHRA A.

  Department of Physics, Indian Institute of Technology

• SRIVASTAVA K.

  Department of Physics, U.P. Agriculture University

• Mehra A.

  Department Of Physics Allaltabad University

• Mehra A.

  Department Of Physics Indian Institute Of Technology

• Srivastava K.

  Department Of Physics U.p. Agriculture University

関連論文

• Comparative Optical Absorption Studies of K_2NiF_4 and KNiF_3
• Electronic Absorption Spectrum of K_2NiF_4
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• Dielectric Relaxation and Molecular Structure. II Dielectric Relaxation in Dibutyl Ether, Diphenyl Ether and Benzophenone in Various Nonpolar Solvents

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