Advances in Materials Science and Engineering / 2017 / Article / Tab 2 / Research Article
Lattice Dynamics of Gd1−x Yx 2 O5 Investigated by Infrared Spectroscopy Table 2 Phonon-fit values of transverse optical mode
(given in cm
−1 ) of the IR reflectivity spectra of
with
= 0, 0.2, 0.4, 0.6, 0.8, and 1 at room temperature.
Assignment 0 0.2 0.4 0.6 0.8 1 151 165 163 156 161 166 Relative motion of Mn polyhedra and Gd(Y) ions 167 — — — — 176 194 190 185 166 181 191 217 217 217 216 218 215 — 228 — — — 229 Mn-O bending motions in 251 255 256 252 255 255 260 267 266 261 265 267 291 286 282 274 278 289 327 328 329 325 329 323 Mn-O twisting motions in Mn polyhedra 371 370 368 368 370 370 — 380 381 378 379 380 402 405 406 404 404 399 433 445 443 439 444 434 462 464 466 462 463 468 Mn-O bending motions within equatorial — — — — — 486 484 494 488 486 485 498 511 519 516 514 514 522 534 540 536 535 533 545 Mn-O stretching motions in 565 569 565 565 563 576 628 633 630 629 629 639 684 692 681 685 688 697 2.76 2.95 3.45 2.87 2.92 1.98 5.02 5.31 5.45 4.87 5.37 3.41
