The angular distribution functions of 002 reflectionintensities by means of X-ray pole figure peaks investigation in the pressed YBa2Cu3O7-xpowder surrounding was measured. Broad peaks in the mentioned distributionfunctions were detected in the case, when the sound wave of some typicalfrequencies had propagated across the powder before the measurement. The peaksappearance could be a consequence of preferred orientation of the particlesbasal planes inside the powder. The problem of sound waves propagation insideYBa2Cu3O7-x powder placed in gravitationalfield has been solved. It can be seen from the presented theoretical analysis,that quasi-orientation effect of particles inside the powder can be expectedduring the sound wave propagation if the conditions are suitable. A simplemethod of sintered bulk YBa2Cu3O7-x materialpreparation can be proposed on the basis of the mentioned principle.
